Yamaha Outboard Motor Oil

Yamaha Outboard Motor Oil

Genuine Yamaha Yamalube oils and lubricants are engineered specifically for Yamaha outboard motors. Changing your Yamalube marine motor oil at the proper interval will ensure long engine life and top performance. Yamaha Online Parts makes finding the Yamaha outboard motor oil your boat needs simple and affordable. Shop Yamalube 10W30 outboard mineral oil, Yamalube 5W30 Full Synthetic outboard oil, Yamalube 2M TC3W 2-stroke outboard oil, and more in quarts, gallons, and multipacks.
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    Yamaha Oils

    Motor oil and lubricants are the lifeblood of outboard engines. YamahaOnlineParts.com takes pride in providing genuine Yamaha Yamalube lubricants for all Yamaha outboard motors. Our Yamalube engine oils come in a range of amounts, such as quarts, gallons, and multiple-packs, making it possible for people to save money by buying in larger quantities.

    We have all the Yamaha OEM parts and accessories and Yamalube motor oils to help you in servicing your Yamaha outboard motor, including:

    We also regularly release new helpful resources, like:

    OEM Yamalube Marine Motor Oil FAQs

    Why are genuine Yamalube outboard motor oil change kits important?

    Consistently replacing oil and filter at the designated times is the essential service for your Yamaha motor. For the benefit of our customers, YamahaOnlineParts.com has designed Yamaha oil change packages for the majority of Yamaha outboards. In these service kits, boat owners will find Yamaha outboard motor oil, oil filters, plug gaskets, and more. It’s never been easier to find the tools you need to change your engine oil than with Yamaha Online Parts. 

    Can I use automotive engine oil in my Yamaha outboard engine?

    There is a lot of confusion about what type of oil to use for Yamaha outboard motors, but the answer is simple: do not use automotive engine oil. It is important to only use Yamaha outboard engine oil for your Yamaha outboard, such as Yamalube 4M oil for four-stroke outboards and Yamalube 2M oil for two-stroke outboards. These oils are formulated for the unique needs of marine motors and are specifically designed for the marine environment.

    How is Yamalube marine engine oil different?

    We highly recommend using Yamalube motor oil for your Yamaha outboard engine—but how is it different from others? Yamaha has invested a great deal of effort and capital to make sure that their Yamalube marine oil is of the highest quality and best suited for watercraft engines. YamahaOnlineParts.com can vouch for this oil’s ability to endure even the most extreme marine conditions and the most vigorous Yamaha outboard engine operations. It can cope with long periods of full throttle use, harsh acceleration, and extended trolling.

    Moreover, Yamalube oil provides outstanding lubrication and anti-corrosion defense for marine engines, helping to stop pistons from sticking, preventing carbon deposition, and keeping away varnish. Yamalube 4 Stroke motor oils have the most profitable anti-foaming formulation available, and in contrast to passenger car oils, they have received the stamp of approval from the National Marine Manufacturers Association.

    How do I service my Yamaha 2-stroke outboard motor?

    If you own a Yamaha 2-stroke outboard motor with an oil injection system and a remote oil tank inside the boat, you'll need to access the tank to begin servicing it. In some cases, this can be a challenge, since the tank may not be in an easily accessible place. You may need to remove a livewell tub, cooler, or access panel to get to the tank. Unfasten the tank from its bracket and you should see a hose that runs from the tank's pump to the engine. There should be a small, white, inline filter that strains the two-stroke oil as it goes to the engine. This filter is often forgotten, but without a sufficient supply of Yamalube two-stroke marine motor oil, your engine will soon be in danger.

    To avoid an oil spill in the bilge, sever the little zip ties that attach the oil line to the filter, and quickly substitute the filter. This task is a bit untidy, so petroleum absorbing pads can be of assistance. It is also wise to have a set of premium nitrile gloves on board the vessel or available for maintenance.

    Unfasten the tank from its mount, then take a tiny service flashlight and point it to the bottom edges of the tank. You will be able to see any dirt or water buildup due to the transparent plastic. If you notice any, you will have to remove the tank, empty it, and clean it. This usually happens when the fill cap is left exposed, the o-ring seal of the fill cap is damaged, or when bulk oil is transported in unclean containers.

    Once you have finished the installation process of the tank, put it back into the holder and take off the engine cover. Utilize the manual transfer switch on the side of the engine to make sure the oil is going through the new filter and the system is ready. All the steps for your Yamaha 2-stroke oil maintenance are now done. Your engine is now prepared for service.

    How do I change my Yamaha 2-stroke outboard engine oil?

    If your Yamaha outboard motor has an oil injection system with an external oil tank, you will begin your service by reaching the container. These tanks might be difficult to access, so you may have to take out the livewell tub, cooler, or access panel to reach it. Unfasten the tank from its bracket and identify the oil supply hose that runs from the tank to the engine. You should find a small, white inline filter that strains the two-stroke oil before it goes to the engine. This filter is usually forgotten, but if you don't provide a continuous flow of Yamalube two-stroke oil, your engine could go into a reduction mode or even worse. Cut the tiny zip ties that keep the oil line attached to the filter, and then quickly switch out the filter before the oil spills into the bilge. This task is a bit untidy, so you should use some oil-absorbing pads to reduce the mess. It's also a good idea to have some high-quality nitrile gloves on board the boat or close by when you're doing the service.

    After you detach the tank from its mount, it is an ideal moment to make use of a tiny service light to shine in the lower angles of the tank. The transparent plastic will let you locate any dirt or water that has been stored inside the tank. In the event that you find it, you will be required to take out the tank, empty it, and clean it. Particles are usually brought in from open fill caps, destroyed fill cap o-rings, or unclean bins employed to buy bulk oil.

    Put the tank back into the holder and take the covering off of your motor. Utilize the manual exchange switch on the side of the engine to make sure oil is going through your new filter and the system is activated. Your Yamaha 2-stroke oil upkeep is now finished. You are set to start your motor service.

    How do I check my Yamaha 2-stroke outboard engine fluids?

    After you've dealt with any critters, the next step in prepping your 2-Stroke Yamaha for the season is to assess the fluids. Even if you had already stabilized the fuel and done a full 100-hour service prior to storage, as Yamaha suggests, there's no way to know what happened during the winter months. To check for any water or debris in the fuel, take out the fuel supply line and use the primer bulb to fill a clear glass container with a sample. At the same time, inspect the fuel supply hoses, clamps and primer bulb for any signs of cracking or wear and replace them if needed. After that, reattach the fuel supply line to the engine and use the primer bulb to fill up all the engine fuel cavities until it feels firm.

    Have a look inside the internal oil tank as well as any external ones (if they are in use), and take note if the volume appears abnormally large - a sign that water may have seeped into the tank. Use a torch to light up the compartment and look for any particles or water lines. If you have not replaced the in-line oil filter during maintenance, now is the moment to do it. Have a few absorbent mats ready as there is no “tidy” way to carry out this job.

    It is also a good idea to examine your gear lube when getting your boat ready for the season. Even if you serviced and replaced the oil for the lower unit prior to putting your boat away, it is still worth making sure that any air bubbles have been removed from the lower unit while refilling. Additionally, taking the time to check the lube can help make sure that no water has managed to get into the lubricant while the boat is in storage.