Shop for Evinrude 2 stroke oil to keep your engine running healthy and smoothly. I changed the oil in my lower unit and it was milky so I figured water had made its way in. Very simple. I have this on a regular basis on my 78 FT337GP to point that I check the right brake pedal before I open the lower door. If the pan is damaged or if the gasket fails it can leak oil around the pan itself. Pull the lower unit lower oil plug and let a small amount of oil drain out. I'm guessing it's a speedo water inlet or perhaps just a water vent, but it appears as if gear lube is leaking out of it. Mercury uses the same gear lube in almost all of their lower units. I have oil on the outside of my lower unit that is coming from a hole in the outboard. Proper oil level and quality insures that the lower end transmission gears and shafts have enough lubrication to spin freely and smoothly, with no friction. Called my trusted Merc rep and he said we can drop lower unit and pressure test it. gear lube leaking from prop shaft? If this is your first visit, be sure to check out the FAQ by clicking the link above. Take the prop off and see gear oil pooled up in the lower unit in front of the prop. That oil has nothing to do with your gear oil in your lower unit unless it has a crack or the prop seal is gone and then if water was in it it would be a grey milky colour. Used puller to remove prop shaft housing. Oil leaks look big after spread out on floor. The unit has a leak if the pressure gauge reading on your leak check fitting starts to fall after the gearbox has been. I own a 25 horsepower 1979 chrysler outboard and noticed a crack about 1 1/2 inches long in the lower unit today and its leaking gear oilI cant find a lower unit replacement any where and cant afford a new engine right now. (I can't ever remember this happening when I changed the impeller before and I change it every year) I turned the upper gearcase upside down to look and it looks like it was leaking down from where the splines connect together. Best Ways to Reduce Gearbox Oil Leakage. There are several reasons for this: A small leak rarely stays a small leak. An intake leak happens when a portion of the. Continued use of this gear case lubricant will: Engineered to provide maximum protection for sterndrive and outboard lower units. If it is milky then there could have been some water intrusion into the gear case. Some of the smaller outboards do not have a seal on top of the water pump and some do, but this will not let oil leak out. Shop for Evinrude 2 stroke oil to keep your engine running healthy and smoothly. Our new Evinrude Etecs do not recommend changing the lower unit oil for 3 years but that of course is safer when the motor is new, then after 15 years and seals begin to leak. Remove the oil drain bolt first, and then remove the oil level. INSTANTLY DOWNLOAD a 50 horsepower outboard repair manual straight to your computer in seconds. BlueDevil Oil Stop Leak is more concentrated and is the universal application that will work for various leaks such as oil pan leaks, rear main leaks, valve cover gasket leaks, etc. Use caution when filling or adding oil. Moving the lever forward, backward, left, and right into specific. Great for fluid fills in differentials, transmissions, transaxles, boat lower units and boat sterndrives. Clean oil is critical for protecting the heavily loaded gears in your lower unit and preventing expensive damage. OK, I too have a 4 stroke Honda, gray milky color of lower unit oil indicates water is mixing in. Low-friction formulations promote increased fuel efficiency and are designed to provide longer oil, seal and equipment life. Email us for information on used outboard parts. gear lube leaking from prop shaft? If this is your first visit, be sure to check out the FAQ by clicking the link above. An intake leak happens when a portion of the. donyboy73 319,639 views. Lower units house the gears, drive shaft, propeller shaft, water pump and raw water inlet for both outboard motors and inboard/outboard motors, where the lower unit is known as a sterndrive, gear case, outdrive or simply a "drive. so keep some windex handy and clean it up. Took it to the shop and had it pressure tested and they just called and said everything checked out. Call us now!. In this case, the Customer Care team will remove your account from auto-renewal to ensure you are not charged for an additional year and you can continue to use the subscription until the end of your subscription term. 4L V8 Extended Cab Pickup (4 Door). Slight leak from lower radiator hose. This article has also been viewed 181,315 times. The upper bolster was filthy with dirt, grease and oil that had leaked past the seal; the upper bolster assembly was taken to a local shop and boiled out. Not a huge problem. Oxidation and rust inhibitors, defoamers, and pour depressants may be added to improve the characteristics of these lubricants. The correct oil level indication is at the mid-point of the pattern. Loose oil fill bolts and axle gear inspection hole plugs are also common causes of leaking oil. 9 lower end units This unit has had water leaking into the oil chamber and consequently water and then beige colored oil draining out when I change the oil from the lower unit. Intake leaks suck, literally and figuratively, and they're common. Call us now!. Quicksilver Premium Gear Lube is recommended for use in marine gear cases with marine engines BELOW 75 HP. I tapped it, put a small screw in it and put a lot of epoxy on top. Pull the lower unit lower oil plug and let a small amount of oil drain out. Go ahead, grab yourself a bargain! High quality compact manual pump for changing or topping up gear oil and other lubricants. johnson 28 spl lower unit oil leek I just bought this boat it has a what looks like a 1986, its a johnson spl. 6457 Send Us A Message. Without the lubricating properties of this high-pressure gear oil, friction will quickly wear through the special layer of hardened steel on the gear teeth, and the gears can fail prematurely. my setup is a 1989 bravo 1. Ready to run!. Adam-For a rear differential leak, we recommend using the BlueDevil Oil Stop Leak. The check oil plugs for the PTO, transmission and First Gear Reduction Cover are all 9/16". Mercruiser Alpha One & Two Sterndrives Technical Specifications Performance Product Technologies has been leading the Marine Industry since 2002 as the go to Online supplier for Mercruiser Products including both Alpha and Bravo Sterndrives. Dropped it off at my BCB dealer on the way home. I have a line all the way down my street of the oil spewing out of the engine. I have gear lube on the side of engine and in the bilge. The metal fitting screwed in far enough that it didn't leak, but not any farther. I decided that removing the draw bar would make it easier so I looked into that. The unit has a leak if the pressure gauge reading on your leak check fitting starts to fall after the gearbox has been. The oil dripping from the lower unit where the exhaust comes out is a new issue. 1 x Lower Unit Gear Oil Pump. Outboard lower units develop tremendous heat in their spiral-bevel gears and need a high "film strength" gear oil to lubricate metal-to-metal contact and prevent damaging wear. drain the gear case oil, and look for signs of water intrusion- If water is present, replace ALL gear case seals- propshaft, drive shaft, shift shaft, and drain/vent screw seals. You'll need to remove the lower unit, then the screws holding the water pump housing, impeller, pump plate in place. I change mine out every 6 months with Mercury-approved oil. There is a separate upper seal kit. For 1978, a second-generation, ball-gear OMC Stringer (400/600/800-series) design with a redesigned (V4 - V6 outboard inspired, thru-hub exhaust) lower unit, which remained in production until 1985-86 and shared many upper gearcase design features of the original "Electric-shift" stringer. Used puller to remove prop shaft housing. Gearbox repair, overhaul, maintenance & servicing. This will require the removal of the lower unit for service. This can cause the hydraulic oil to foam resulting in erratic movement of hydraulic. Please what ever you do, stay away from the phillips head screw near the foot of the gear case. Today I hooked it up and ran it and discovered thick oil leaking out of the foot - coming from near the prop shaft. First inspect the cam and crank position sensors to ensure the leak is not the o-ring on one of these sensors. Move clutch control lever 4 to forward and reverse positions from neutral position to check proper gear engagement. We are not affiliated with Mercury Marine and accept no advertising. One of them is probably cracked and brittle and will break if you tug on it. The Lucas 85W-140 gear oil enjoys the technology Lucas developed in making the "Lucas Heavy Duty Oil Stabilizer", the number one supplemental oil in the heavy duty industry. Why? My skeg broke off, but the boat still steers fine. I changed the oil in my lower unit and it was milky so I figured water had made its way in. There is a seal on the prop shaft, and one on top of the gear housing under the water pump. Oil Leaks from Lower Engine Area: Some 6. If fluid is comming out that lower small drain hole on the starboard side, then I would say it's the seals in the lower unit, Not the upper unit. The Advance Auto Parts core charge presented to you online today with your item is representative of the most common core charge. Went to a few Auto parts shops and no one stocked marine gear oil. Can you tell me how much it will. Fill up with top quality 2 stroke outboard oil at Evinrude. How do you change the oil in outboard lower units?. Install the Lower Oil Seals force to your thumb to keep air from leaking out. fresh oil and new seals under the 2 screws and your good. The lower one is for draining and filling, while the upper one is an overflow while re-filling. donyboy73 319,639 views. I found this process more efficient that using a tube or squeeze bottle of gear oil. Rather the other way around? If the gearbox was jamming, making extra friction, it would overload the engine. Lucas Heavy Duty Plus gear oils contain an extra additive package over and above the normal gear oil additives. This will tell you the type and weight of gear lube that you'll need, and may even include a diagram and instructions on how to change it. Lower Unit Gearcase Seal Kit for Mercury Mariner Outboard Sealing the gear oil inside the gearcase, and keeping water from intruding into the gearcase are the two aims of all the shaft seals, o-rings, spaghetti seals and gaskets in a lower unit. I got the leaking fuel from the power head fixed by resealing the crankcase halves. com 11 Cobra SX O-ring O-ring Gimbal Bearing, New Maintenance Free! Screw O-ring U-Joint Bellow Clamp Seal O-ring O-ring Exhaust Bellow Clamp Oil Seal. or 3 years, whichever comes first. I keep re-filling it and saying to myself, "I got to fix this someday". We specialize in Johnson and Evinrude lower units but do have Mercury, Yamaha, and Honda lower units occasionally. The unit has a leak if the pressure gauge reading on your leak check fitting starts to fall after the gearbox has been. Gear oil will seldom visibly leak out, you just start getting a lot of water in the lower unit. 9 12 1 Pinion Gear. If there is oil on the. Peugeot 206 GTI How to The following instructions are specifically about how to change the gearbox oil of any Peugeot or Citroën with a so-called BE4/5 gearbox, but generally all separately-fitted gearboxes from any type or brand can be refilled using the same procedure. Once the gear oil is completely drained, make sure the drive is raised or lowered so that the propeller shaft is level. A Yamaha outboard repair manual is divided into several chapters; e. I have a line all the way down my street of the oil spewing out of the engine. I pulled it out of the garage with the motor running and there was another 12 x 12 oil spill on my drive way. Don't see how it could be gear oil as even if the gear seal leak, you not be getting that oil sucked into the engine and blow out the exhaust. After a few hours, I could see where it leaked down again. Others will use a multi-grade lube oil - which tends to leak out faster or they will use a non approved gear oil that has additives in it which attack yellow metals ( like the phosphur bronze bearings in a seagull) or have anti foaming or other qualities which do not work well in a marine environment. Drain all oil from the lower unit. I found this out after replacing the top driveshaft seal, and the lower unit continued to leak gear oil. The front main seal of the drive is not really designed to hold water out as much as it is to hold oil in. Best check first that the oil IN the gear housing is O. It's definitely oil from the fuel/oil mix, not oil from the lower unit gear case. The only issue I have with it is that there is so much of it when it does leak out. I thought if you had the top plug in, a vacuum was formed and the lube would stay in the lower. Holds approx. The telltale sign of a valve cover gasket that has lost its seal is an oil-covered valve cover or a burning oil smell when the engine is running. Yamaha four-stroke outboards have a tapered oil sump design (smaller at the top than the bottom), so the closer the oil level is to full, the faster it fills. This includes the DF70, DF80 and DF90 Outboard Engine models. Black oil is just going to be unburnt fuel and carbon deposits running down the inside of the exhaust leg. Today I hooked it up and ran it and discovered thick oil leaking out of the foot - coming from near the prop shaft. Therefore, add oil slowly and in small amounts, and do not attempt to "top. Gear Case Oil Change BF35~BF225 Change the gear case oil with the engine stopped and the outboard in the vertical position. 15W-40 engine oil measuring information for automotive industries, mechanics, engineering and technical and technological engineers. Using a big hammer, pound on this Vise Grip trying to drive it out of the splines in the crankshaft. Changing Oil for Your Lower Unit in a Mercury Outboard. Perhaps the gear oil is overheating because of a bad bearing. The Ford/New Holland 6610 Tractor first came out at a price of $24,500 (1993), but you might be one of the lucky ones who found a good deal lower than that. As a side note, at the time that I changed the gasket, I noticed that even with the top plug in, gear lube was draining out of the bottom of the lower unit. Gearbox Oil Leak BOATING SCENE How To Change The Lower Unit Gear Oil In An Outboard Motor - Duration: 4:10. For that purpose it worked alright, but I wasn't very impressed by it for a few reasons: 1. I have my water pump kit and lower unit oil ready to install, i will do a pressure test at that time. You could build a pressure tester using a lower unit oil fill screw and connect it to a air compressor at 5-7lb of pressure and spray soapy water on the lower unit to see where it is leaking from. Lucas Heavy Duty Plus gear oils contain an extra additive package over and above the normal gear oil additives. Mag 1 MG550MPL 80W90 Lower Unit Marine Gear Oil, Pack Of 6. I supplied pictures of the upper and lower. We would be glad to assist you. Both of these have gasket style washers. okay, so I’m doing my 20 hr oil and lower unit gear oil change on my new Zuk DF140s. DESCRIPTION lb. From forum research I've found that the 97-2004 VT1100 Shadow's, both the Spirits and the Sabre's, tend to have a common problem with engine noises. Like everyone says, be sure you have an actual gear lube leak, before going crazy ripping into the gearcase. You cannot receive a refund if you have placed a ShippingPass-eligible order. Have you run the engine on a boat? I only ask because you mention that the gear lube is clean when you drain it…. What you’ll need: An oil drain pan; A flat-head screwdriver; A piece of cardboard (to catch drips) One quart of gear lubricant or lower unit oil; A lower unit oil pump; Oil absorbent; Step 1. By Don Casey. This gear oil is much thicker than engine oil, allowing a. If oil does not leak from the vent plug when you remove the screw, the lower unit oil level is low. Offering a wide variety of Rebuilt Lower Units: Lower Units - Gear Cases & Lower units for outboard motors. No cancellations. DO NOT EXCEED 10 PSI PRESSURE DURING THE LEAK TEST. Slight leak from lower radiator hose. When you shut it down, that lower unit will start to cool and as it does, it could suck seawater into the gearcase. 3 alpha one and I have isolated this leak to the top side. By clicking close you agree to use the site as is. I am a retired Toyota master diagnostic technician. My Honda exhibits the same color oil. The combination of an ultraviolet (UV) or blue light and fluorescent dyes allows you to find small oil leaks. You mention oil leaking from a 'vent' hole. Honda Marine Multi-Purpose Grease is an extreme pressure grease for high load use with excellent water resistance properties. If the “check oil pressure” light is lit after starting up the car, you may not have put in enough oil or some may be leaking out. I have searched and everyone that seems to have shaft seal trouble gets oil leaking out of the weep hole on the front port side of the lower unit, and it is always black engine oil. If there was any water in the lower unit when it went into storage, then the water and gear oil eventually separated. Slight leak from lower radiator hose. I am a retired Toyota master diagnostic technician. Fits AMSOIL quart bottles, 1-gallon containers and 2. Took it in and they replaced the seal. New Kuhn disc mower leaking - posted in Machinery: I was hoping someone could shed some light on my situation. Lower Unit Gearcase Seal Kit for Mercury Mariner Outboard Sealing the gear oil inside the gearcase, and keeping water from intruding into the gearcase are the two aims of all the shaft seals, o-rings, spaghetti seals and gaskets in a lower unit. Upper Driveshaft Assembly, Lower Driveshaft Outdrives for Sterndrives; Remanufactured Gear Cases are priced at deep discounts to save you money; Rebuilding: Mercury, Mariner, Force, Evinrude, Johnson, Chrysler. It's leaking out where the shaft goes into the upper gear box. I have lost anywhere from 4 - 5 tablespoons of oil - Shadetree for Model Number 110. So, upon inspection, I found all of the gear oil apparently coming from the lower unit area, with no signs of oil above the lower unit joint. A faulty oil pressure sending unit can result in inaccurate oil pressure readings and warnings. That's if the leak is coming from the separation point. Seal Kit Lower Unit Gear Housing Johnson Evinrude 50-75 HP 5000309 Fits the following applications: 50, 60, 65, 70, 75 HP Replaces: Johnson Evinrude 5000309 396349 Where Ignition Is Just The Start. Call us now!. Raise row unit shield. I went outside and checked it today and saw gear oil was leaking out the water intake on the lower unit. First of all, the Honda 75 and 90's use Mercury 4 1/4" lower units. Call your local boat repair shop before you do extensive un-repairable damage. Drive gear and driven gear on each cutting unit may wear prematurely. Changed my gear oil other day and was wiping down boat and noticed small amount of gear oil on floor. Carry the current API and ILSAC engine oil licenses, as well as the GM dexos1™* gasoline engine oil approval. johnson 28 spl lower unit oil leek I just bought this boat it has a what looks like a 1986, its a johnson spl. That's when I noticed the oil. Changing Engine Oil. , simply crack the lower screw and let a little out. Not a huge problem. Gearcase Seal and Bearing Kit, Mercury, Mariner 135-200 HP without the forward bearing Replaces Mercury Marine Quicksilver original equipment part # 31-803031T1. When I separated the upper and lower unit about a half a cup of oil seaped out the side. The Lower Unit Seal Kit comes with all the parts needed for separating the lower unit (Gear Case) from the upper unit (Drive Shaft Housing) and removing and installing the Bearing Carrier. Before you take anything apart pull out your TOP gearcase drain screw and use a small tie wrap or wire as a dipstick and try to get a sample of what your gear oil looks like. I got the leaking fuel from the power head fixed by resealing the crankcase halves. Was expecting a to spend a couple hundred on a lower unit fix. Frequently Asked Questions. Install the oil level bolt in the oil level hole and tighten. The car blew the engine oil cooler pipe leaking profusely I drove it at night came home and there was a 12 x 12 oil leak in my garage. Many of your transmission questions are answered below. Ok, after more inspection, it does look like it's the trim ram that is actually leaking, which I believe would be hydraulic fluid then, right? Here are some more pics, I found a spot on one side that looks like the same oil leaking down the trim ram and then down the outdrive to the bottom fin and down my driveway. ASTM Timken load tests show that Royal Purple Max-Gear has a far stronger "film strength" than both synthetic and mineral oils. So, upon inspection, I found all of the gear oil apparently coming from the lower unit area, with no signs of oil above the lower unit joint. Changing the lower unit oil of a Mercury outboard provides proper lubrication for the internal components of the motor while removing normal metal shavings from the oil. This is normal. I change fluid and its was perfect no cloud no water. Inky black & burnt odor - - it's past due for a change. But replacing all the seals should be done as well. This can mean that the air pressure is not at full strength when oil is released to the nozzle so that there is a risk of the atomized oil receiving an inadequate air supply. QUICK DISCONNECT COUPLERS (DELUXE) - TRACTOR John Deere 6400 - TRACTOR - 6200, 6300, 6400, and 6500 Tractors (North American Edition) SELECTIVE CONTROL VALVES QUICK DISCONNECT COUPLERS (DELUXE) | 777parts. Everything goes without a hitch until after I get everything put back together and notice gear oil leaking out from in front of the prop. Manual transmission oil for synchronized transmissions (often called MTF) is an oil that has additives for extreme pressure to care for the gear faces, high lubrication of bearings, but also an additive to make the synchronizers grab so you can shift gears. Lower Unit Seals and O-Rings for Volvo Penta SX. The gear unit has a separate, closed pressure oil system; the bottom half of the gear casing serves as the oil sump. The tip of the prop was against a 2x8. Lower unit oil changes are an important part of maintaining an outboard motor. The telltale clue of burned oil is an unmistakable, burned. Take the prop off and see gear oil pooled up in the lower unit in front of the prop. I am a retired Toyota master diagnostic technician. New seals can easily be added depending on the brand and model of thruster. Often times however, the leakage is not gear oil, but rather. Ordinary gear lubricant can't do all of this; so always avoid automotive or tractor gear oils. Motor oils with higher viscosity indices thin less at these higher temperatures. Re: Alpha 1 Gear Lube use problem I have a 96 maria shaba 4. If the grease is too thin, it doesn’t protect the metal parts from grinding each other. The outdrive oil reservoir bottle on my boat has been leaking slowly for years. Certified technician said that lower unit/shaft seal isn't leaking, but I have the spots in my driveway to prove that something is otherwise. so keep some windex handy and clean it up. Mercury’s High Performance Gear Lube is a blueish or a greenish color. Honda buys them from Mercury, so if necessary, any Mercury dealer can easily service those lower units. Change The Gear Oil (Click to expand) Fill the gear oil. We work with the top suppliers in the industry. There are several reasons for this: A small leak rarely stays a small leak. The gear at the top of the steering shaft was a bit of a pain to remove (even with a gear puller). The hydraulic unit is plumbed For vertical mounting as noted above. If you run your motor for fewer than 100 hours during the season, change your lower unit oil. I have a Sears 1995 Gamefisher 25hp Outboard Tiller motor it seems to run good at low speeds but when I give it full throttle its to be slipping or won't go full speed, it also makes a noise as the problem seems to be in the lower unit as the fast gear trys to engage. I have gear lube on the side of engine and in the bilge. Don't believe the two seals on the drain/fill plugs would do that. Use caution when filling or adding oil. Properly lubricated gears and bearings protect against rust and corrosion. In this case, the Customer Care team will remove your account from auto-renewal to ensure you are not charged for an additional year and you can continue to use the subscription until the end of your subscription term. Your power steering fluid is obviously not meant to leak. There is a seal on the prop shaft, and one on top of the gear housing under the water pump. Like others have stated, if creamy, milky, or if you see swirl like patterns in lower unit oil you probably have a leaking seal. Transmission Fluid acts as a coolant in a similar way to gear oil in that it transfers heat away from the mechanisms caused by friction and high pressure, however its boiling point is lower than. As you can kind of see in the picture (no judging - I didn't do any cleaning in the fall) there is oil all down the back end of the lower unit. I thought it was from either the fill plug or drain plug, but those screws are purty friggin tight! And there didn't seem to be any oil residue around the outside where the plug screws in. Mesh of cutting unit motor gear to reel gear. If there was any water in the lower unit when it went into storage, then the water and gear oil eventually separated. 1- How do I check the transmission fluid level? 2- I have a leak. Evinrude/Johnson outboard lower units. The hiper Merc gear oil is the same color as the penn. Water can also leak into the drive if the Ujoint Bellows are leaking. Seal Kit for the lower unit gear housing on a OMC Cobra SX Single Propeller outdrives from 1994 thru 1998. AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION DESCRIPTION The NAG1 automatic transmission is an electronically controlled 5-speed transmission with a lock-up clutch in the torque converter. Manuals contain step-by-step repair procedures, illustrations, pictures and advanced troubleshooting. I've never changed the seals in the lower unit of my 1990 Evinrude 25h. Leak Beside the Passenger-Side Front Wheel. When it comes to leakage, the only real solution is to take down the machine and repair it in order to stop the leak. Use the full 8 oz. When full, remove the tube nozzle and place your finger over the hole to prevent leaking. Few maintenance chores are as important as changing the lower unit oil on your boat's outdrive, on a regular basis. stern drive gear oil leaking out weephole So I'm not very mechanical, and my dad, who is, helped me replace the water pump (all of it) in my 1985 mercruiser alpha one stern drive. Replace the whole bushing & shaft assembly!. You are supposed to be able to rotate the pin that holds the draw bar in place and then slide it upwards between the two "forks" that serve as a latch. Have checked the dipstick and it is not leaking there & the dipstick still shows full; so, it isnt leaking much. When it is flat, I pump fresh fluid from the bottom of the caliber with an oil can full of hydraulic fluid and clear hose system I carry whenever I go on trips. 9 lower end units This unit has had water leaking into the oil chamber and consequently water and then beige colored oil draining out when I change the oil from the lower unit. 5hp Evinrude that had the same problum and had to by new seals, it is was important to use the correct gasket sealer on mine also, it took me 3 trys to stop the leak but it worked. It doesn't take much water to displace lubricate from the bearings. 115 hp johnson water leaking between lower unit and upper unit. Often times however, the leakage is not gear oil, but rather. Jump to content. Maintaining your Mercury outboard lower unit provides a peace of mind knowing that your boat’s motor will function efficiently when out for a day on the water. Shaft speed and flow are directly proportional. The water shows up when you crack the lower screw in the gear case. We also stock both upper and lower OMC Cobra outdrives and all the gears, shafts, seals, and bearings. Mercury EFI 4 Stroke 60 HP: Fuel Filter, Oil Change and Gear Case Lubrication Change. There are o-rings between the lower unit and the upper part of the drive. Peugeot 206 GTI How to The following instructions are specifically about how to change the gearbox oil of any Peugeot or Citroën with a so-called BE4/5 gearbox, but generally all separately-fitted gearboxes from any type or brand can be refilled using the same procedure. Now I have gear oil leaking out of the water intakes on the side of the new lower unit. If it appears to be increasing, check the oil level in the lower unit as discussed in the owner's manual) If the seal has failed, take the engine to an engine repair shop immediately to avoid expensive gear-unit damage. If the “check oil pressure” light is lit after starting up the car, you may not have put in enough oil or some may be leaking out. This gear oil is much thicker than engine oil, allowing a. Oil Weight SAE 75W-90; Packaging. Normally lower unit oil can be purchased at any Wal-Mart, West Marine, or marine supply store. Edited Note - I attached a resized pic of the opening this oil is coming from. hose has nothing to do with the water in the gear oil. Motor oils with higher viscosity indices thin less at these higher temperatures. Now it leaks worse with the new seals than with the oldI keep i topped off with quality gear oil and at the first sign of water intrusion I drain and refill completely. Gear Oil Additive + Stop Leak is a special additive formulated for manual transmission, gear boxes and differentials to extend the life of gear oils. Randy said that with it sitting like that the oil injection and the fact that it was hard to start meant that I filled the carbs with oil. I find the gear oil in my bilge I leaks more when the foot is in up position. the case says 500 cubic cm. New Verado 300 leaking motor oil out the lower unit We are a group of Verado owners from all over the world that encourage the free exchange of information about the Verado engine. 99 times out of 100 its just exhaust oil or fuel leak migrating to the plug recess. Actually oil would leak from around the screw heads if motor was out of water. I had oil running out but no water intrusion. Check Row Unit Gear Case Grease: NOTE: Row unit gear case grease must be warm with header raised to obtain accurate readings on dipstick. (I can't ever remember this happening when I changed the impeller before and I change it every year) I turned the upper gearcase upside down to look and it looks like it was leaking down from where the splines connect together. When you check your gear oil as a part of regular inspection, if you find the oil to be milky, it means water has been introduced somewhere. Gear oils are high density & low gravityas the molecules shear/break down into smaller pieces, the same amount of oil takes up less space, and needs a top off plus a little amount of trapped air so I wouldn't worry about it too much. After that, further cleaning and light sandblasting was done. See unit dimensions for reservoir base bolt pattern. I have my water pump kit and lower unit oil ready to install, i will do a pressure test at that time. capacity the owners manual listed. All components of the smaller units are mounted on a common bedplate, separated. So, upon inspection, I found all of the gear oil apparently coming from the lower unit area, with no signs of oil above the lower unit joint. Pulled the prop. For that purpose it worked alright, but I wasn't very impressed by it for a few reasons: 1. Makes you think the prop shaft seals are leaking. Online web tool for 15W-40 engine oil mass weight vs liquid volume conversions. There was no water found in the lower unit. If it's not the same color as your leak or it's full you may be barking up the wrong tree. Every enine manufacturer ships their engines with the gear oil in the lower unit and always have. (2nd pic) New seal oil cooler seals are purple color made of viton rubber it will resolve your leak problem for good, or a very very long time. Most likely the water is coming from a leaking lower unit seal but it's tough to tell for sure without seeing it. (I run 100:1 Amsoil) Some smart guy had a leaking seal on the lower unit and put a big gouge in the seal housing getting the old seal out. Gear oils are high density & low gravityas the molecules shear/break down into smaller pieces, the same amount of oil takes up less space, and needs a top off plus a little amount of trapped air so I wouldn't worry about it too much. Cleaned around the corroded hole with spirits to get rid of all oil residue, and also heated the area for a few seconds to possibly get rid of any oil soaked into the porous "walls" of the corroded hole. Oil leaking from small hole in lower unit!! Trying to go boating with my family today and while removeing the cover i found small puddle of gear lube under the lower unit coming from small hole in front section of the lower unit. My lower unit is leaking gear oil. Edited Note - I attached a resized pic of the opening this oil is coming from. Filled unit with oil. (I can't ever remember this happening when I changed the impeller before and I change it every year) I turned the upper gearcase upside down to look and it looks like it was leaking down from where the splines connect together. Suitable for most outboard and sterndrive gear cases with 3/8" x 16 thread filler plugs. I found this process more efficient that using a tube or squeeze bottle of gear oil. This also doesn't take into consideration the cost of the oil that is leaking. The guys at Boaters Outlet in Roseville seem very good to work with. You may be seeing residual oil from the exhaust. They should be replaced with each oil change. See our other pages for more Mercury, Johnson and Evinrude outboard motor parts. Makes you think the prop shaft seals are leaking. For example, in a boat that is put in storage and left for a season, or a year or two. It's definitely oil from the fuel/oil mix, not oil from the lower unit gear case. In chronological order. Identify the oil first. And, since the lower unit operates underwater, its lubricant also has to be capable of maintaining necessary lubricity even when a significant amount of water is present, should some leak inside. That oil has nothing to do with your gear oil in your lower unit unless it has a crack or the prop seal is gone and then if water was in it it would be a grey milky colour. g general information, specifications, periodic checks and adjustments, fuel system, powerhead, lower unit, bracket unit, electrical system, and troubleshooting analysis. It had come out of top of lower unit where it bolts to motor. Now weigh each bucket and you will find that the gasoline is much heavier then the gear oil. I have lost anywhere from 4 - 5 tablespoons of oil - Shadetree for Model Number 110. It ran for a few seconds before I realized what happened and put it in neutral. I've been screwing around chasing the infamous engine oil leak on my 02 and after doing the oil pan gasket, intake manifold set (was hoping it was one of the sensors on the rear top of the intake) and as a hail mary- the valve covers, I finally bit the bullet yesterday and did the rear main. ASTM Timken load tests show that Royal Purple Max-Gear has a far stronger “film strength” than both synthetic and mineral oils. Gears chart for lower unit parts 115 thru 250 hp. Get the best deal for Evinrude Complete Outboard Lower Units from the largest online selection at eBay. SYMPTOM ONE of a serious issue: If you have gray or cream colored oil in your gear, you have a failed gear oil cooler. Replace the oil plug h. If the pan is damaged or if the gasket fails it can leak oil around the pan itself. Bought this to do a lower unit oil change on my 120hp evinrude outboard motor. Move clutch control lever 4 to forward and reverse positions from neutral position to check proper gear engagement. Oil leaking around lower unit, by IWombat July 9th, 2007, 11:44 AM.