Recognizing these demands, Mercury Precision Lubricants® products are formulated to meet the unique needs of marine engines with specially designed additives that reduce friction and protect against engine wear and internal corrosion. Also having a look at the oil during a Mercury outboard lower unit oil change will give you details on the state of the motor's internal components. Wear - tackifiers and extreme pressure additives improve oil film adhesion and protect against excessive wear. If not removed, this jumbled mess could destroy the seals that contain and protect the oil inside your gearcase. For use in all outboard lower units and jet pumps below 75 hp except outboards with electric shift gears. We recommend original manufacturer marine oil for best performance and longivity. It is important to do this as quickly as you can to minimize the total amount of oil loss. Choose the right lubricant for your engine or gearcase. Engine should be vertical in the fill/drain processes. Mercury 80W-90 Premium Gear Lube is recommended for gearcases for outboards below 75 horsepower. It stays in grade under the most extreme conditions to ensure proper lubrication in a wide temperature range and is recommended for use in all Mercury Racing® FormulaRace and Verado® four-stroke outboards as well as non-catalyzed high-horsepower four-stroke marine engines.
Go to WW and as Chris and wired said buy a quart of Quicksilver/Mercury Premium LU oil in the quart in the package that has the pump. There are various tools available in order to re-fill the oil, such as squeeze bottles and tubes. Ensure that you have the washers (mine are blue) under the screws to seal the screws. Also, be sure to consult your outboard motor's owner manual to verify the steps above are in agreement with the manufacturer's recommendation for changing lower unit oil. It provides maximum protection for OptiMax and DFI engines, outperforming other oils by combining a modified base stock blend with a synthetic additive package that provides superior resistance to piston scuffing, minimizes carbon build-up and helps maintain engine top-end speed and acceleration. Some oil will begin to trickle out so you need to make sure that the oil drain pan is positioned correctly to catch the draining oil. 52 2-4-C Marine Grease With Teflon - 8oz $12. 5W-30 Full Synthetic Turbocharged Direct Injection Diesel Engine Oil resists thermal breakdown and oxidation under extreme conditions to optimize Turbocharged Direct Injection (TDI) diesel engine performance in marine applications. 25W-40 Synthetic Blend 4-Stroke Marine Engine Oil meets the stringent requirements of high-performance Mercury outboard models and other brand engines. SAE 90 High-Performance Gear Lube was engineered to extend gear life in high-speed and high-horsepower sterndrive and outboard gearcase applications. A marine specific lower unit gear lubricant should only be utilized in a Mercury outboard.
Then with a cleaned off magnet on the drain has it, some don't, remove the pump adapter and insert the screw. It seems that the easiest way for most people is to use a squeeze bottle. 00 (2) High Performance Multi-Purpose Extreme Grease - 8oz $12. Changing the lower unit oil of a Mercury outboard provides the proper lubrication for the internal components of the motor, while removing normal shavings from the oil. Marine engines frequently run for extended periods of time at high rpm or wide-open throttle, often in corrosive saltwater. With a higher concentration marine additive package, Premium Plus 2-Stroke Marine Engine Oil Synthetic Blend is formulated for high-horsepower two-stroke outboards, including direct fuel-injected engines. It contains extreme pressure synthetic additives to protect gears from metal-to-metal contact and provide excellent protection against corrosion and excessive wear. The only thing that I do additional is, replace the gaskets around the drain and vent plugs. 25W-50 Synthetic Blend 4-Stroke Marine Engine Oil is formulated with additives designed to maintain performance under high-heat and high-rpm conditions. It reduces rust and corrosion of internal components and meets or exceeds all outboard and personal watercraft manufacturers' recommendations for use of TC-W2® and TC-W3® oils in premix and oil-injected two-stroke applications. Formulated for all marine diesel engines, including Mercury, MerCruiser® and D-Tronic, 15W-40 Heavy Duty Diesel Engine Oil helps control the formation of sludge and varnish deposits in high-stress applications to protect diesel emissions systems, diesel particulate filters and Selectively Catalytic Reduction Systems. Add Oil: To refill the lower unit, insert the bottle or tube into the bottom drain hole and slowly squeeze the bottle to force the oil into the lower unit. Features: Water intrusion - advanced emulsifiers prevent foaming to protect gears if water enters gear housing.
West Marine has them as well as your local Merc dealer. Makes it a nice clean simple job. Developed to eliminate thermal breakdown under extreme rpm, temperatures and loads, it provides the best wear and corrosion prevention for any engine, especially those operating at maximum output and high temperatures for extended periods of time. Tighten both the lower and upper drain plugs and wipe off any oil that may have fallen on to your lower unit. Changing Oil for Your Lower Unit in a Mercury Outboard. 85W-90 Extreme Performance Gear Lube is recommended for use in racing, high-performance and extreme-duty gearcase applications. Its clean-burning formula reduces carbon build-up in exhaust systems and provides superior lubrication in premix or oil-injected two-stroke applications.
It outperforms automotive gear oil in marine applications by providing maximum protection against excessive wear in the presence of water and helps prevent corrosion and pitting. Excellent instructions. Keep the bottle or tube in the bottom pug and reinstall the top plug. This process can easily take between 5-10 minutes.
Once all the oil has been completely drained, the lower unit will have to be re-filled. Allow all of the oil to drain completely from the lower unit. The additive in such oil is normally of a higher water demulsability and has corrosion protection. Two-Stroke Marine Engine Oils. On the 6 cyl engines remove the vent plug at the top and drain on the bottom. Drain the Oil: Now remove the top drain plug; this will release the vacuum that exists and allow the oil to drain freely from the Mercury lower unit. Don't have to get them all out.
Read more about brand name vs generic oils here. Im guessing mercurys lower unit oil... but I dont know if it needs to be synthetic or not or what. Boating is one of the most demanding environments in which an engine can operate. 10W-30 Full Synthetic 4-Stroke Marine Engine Oil contains 45 percent more dispersants, 24 percent more detergents and 49 percent more anti-wear additives than the synthetic blend. THanks if anyone reallly knows for sure:) No guessing.
Continue to add oil until the lubricant is flowing freely from the top hole and is free from any air bubbles. Prepare to Drain: First, you need to ensure that your outboard is in a vertical and upright position. I want to change it out but want to find out how much it holds and what type. Premium 2-Stroke Engine Oil is formulated to meet the needs of low- to mid-horsepower two-stroke outboard engines under general marine operating conditions. It contains advanced corrosion inhibitors and is FC-W® and FC-W Catalyst Compatible®. Replacement is up to you, but I figure might as well be safe and replace them. Excellent resistance to water and moisture. NOTE: Mercury Premium SAE 80W90 Gear Lube should not be mixed with Mercury High-Performance SAE 90 Gear Lube. Quickly remove the bottle from the bottom hole and install the drain plug. They are not cheap at the dealer, I think they gouged me for $9. The first engine manufacturer to develop oils that meet the National Marine Manufacturers Association® (NMMA) FC-W® standards for all four-stroke engines, Mercury rigorously tests its Precision Lubricants products to meet our high standards to protect your outboard, inboard or sterndrive engine and provide many years of reliable service and fun on the water. Continued use of this gear case lubricant will: Provide maximum protection against excessive wear - even in the presence of water Prevent corrosion and pitting Help extend gear life.
00 for the three of them. OptiMax Synthetic Blend two-stroke engine oil was developed to meet the needs of Mercury OptiMax® and direct fuel-injected (DFI) two-stroke outboard engines. Mercury Marine gear lube outperforms automotive gear oil in marine applications because of its specialized additive package designed for marine gear cases. Fishing line wound around the prop shaft of your outboard is a real drag. 10W-30 Synthetic Blend 4-Stroke Marine Engine Oil offers all the features and benefits of mineral-based oil along with industry-leading shear strength and corrosion inhibitors for better corrosion resistance and wear protection. Always ensure your oil has the following properties in order to function correctly: - Excellent seal compatibility. Use a big screwdriver to keep from dinging up the screw slots and get them tight using both hands. Enhanced gear, bearing and seal cleanliness. Mercury lower unit oil changes are an important part of maintaining an outboard motor. When not on the water, marine engines often sit in storage for long periods of disuse during the off-season.
It protects anti-pollution systems, increases the life of diesel particulate filters (DPF) and provides outstanding wear and corrosion prevention to help extend engine life. Great protection of components from rust and corrosion in dry conditions and in moist conditions. 10W-30 Mineral 4-Stroke Marine Engine Oil provides outstanding lubricity for internal engine components to reduce wear, scuffing and scoring for improved long-term reliability, making it a good choice for Mercury and other brand four-stroke outboard engines. Place an oil drainage pan beneath the outboard where you will remove the bottom drain plug. It's FC-W and FC-W Catalyst Compatible and recommended for all brands of four-stroke outboards. On the 3 cyl engine like mine, there are 2 vent plugs on top.