Yamalube 10W-30 Full Synthetic Four-Stroke Outboard Motor Oil

Yamaha 10W-30 Full Synthetic Marine Engine Oil Resources and Information

PartsVu.com is happy to offer a broad selection of Yamalube 10W-30 Full Synthetic outboard engine oil to match your Yamaha 4-stroke outboard motor specifications. Our inventory of Yamalube 10W-30 Full Synthetic marine motor oil comes in quantities of quarts and gallons, as well as multipacks, to help save money by buying in bulk.

We stock a complete range of Yamaha outboard parts to service your Yamaha outboard engine. Looking for other Yamaha outboard engine oils? Browse our selection of 4m and 2m certified Yamaha OEM outboard motor oils.

We also regularly release new, helpful resources like:

• Yamaha Outboard Service Schedule
• Yamaha Outboard Specs & Capacities Chart

Yamalube 10W-30 Four-Stroke Outboard Motor Oil FAQs

How do I perform an oil change on my Yamaha 4-stroke outboard motor?

Changing the oil on a Yamaha 4-stroke outboard is a straightforward service, but it’s important to do it properly to protect the engine under real on-the-water conditions. Unlike 2-stroke engines, Yamaha 4-strokes do not use oil injection systems or remote oil tanks — all engine oil is contained within the crankcase, similar to an automotive engine.

Start by running the engine for a few minutes on the hose or in the water to warm the oil. Warm oil flows easier and helps carry out more contaminants during the drain process. Once warmed up, shut the engine off, remove the cowling, and locate the dipstick and oil fill cap. Removing the fill cap will help the system vent and allow the oil to drain more smoothly.

Next, position an oil extractor pump through the dipstick tube or access the engine’s drain bolt (if equipped and accessible). Most Yamaha outboards are designed to be serviced cleanly through the dipstick tube using an extraction pump. Slowly remove the old oil, making sure to get as much out as possible. Take your time here — rushing this step usually leaves dirty oil behind.

Once the oil is drained, remove the oil filter. Be ready with a rag or absorbent pad, as a small amount of oil will spill during removal. Install the new oil filter, lightly lubricating the gasket with fresh Yamalube 10W-30 or 20W-40 marine oil before threading it on. Tighten it by hand — no need to overtighten.

Now refill the engine with the correct amount and viscosity of fresh Yamalube 4-stroke marine oil. Fill slowly, then check the dipstick to avoid overfilling. Once filled, reinstall the dipstick and cap, then start the engine and let it run for a minute or two. This allows the new oil to circulate and fills the new filter.

Shut the engine down, wait a few minutes, and recheck the oil level. Top off if needed. Inspect around the filter and service points for any leaks before reinstalling the cowling.

Your Yamaha 4-stroke oil change is now complete, and the engine is ready for continued use with proper lubrication and protection.

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

while many boat owners wonder about this, the short answer is that Yamaha outboard motors are vastly different from your automotive engine, so you’ll want to avoid using regular automotive engine oils. Use an Yamalube 10W-30 Full Synthetic marine motor oil specifically formulated for the rigors of the marine environment, like all Yamalube 4M engine oil for four-stroke outboards, and Yamalube 2M engine oil for two-stroke outboards.

How is Yamalube 10W-30 Full Synthetic marine motor oil different?

Yamaha has spent countless hours and resources to ensure that only the best Yamalube 10W-30 Full Synthetic marine motor oil, specifically suited for the marine environment, goes into your Yamaha outboard engine. PartsVu.com can confirm that this oil was formulated to withstand the harshest marine environments and most strenuous Yamaha outboard operations. Whether it’s extended full-throttle operation, engine-punishing “out of the hole” acceleration, or hours of trolling, genuine Yamalube engine marine motor oils can handle the job at hand.

Additionally, Yamalube oil delivers superior lubrication and anti-rust protection for outboard engines in marine environments and works to guard against ring stick, carbon buildup, and varnish. Yamalube 4-stroke engine oils have the best anti-foaming formula available, and unlike passenger car oils, they are certified by the National Marine Manufacturers Association.

Aren’t all outboard oil filters the same?

While most outboard marine oil filters look the same, it’s what’s on the inside that counts most. Yamaha marine outboard oil filters are manufactured specifically to protect Yamaha outboard engines, using only the finest components and construction methods available. This includes special filter media and metal filter media bases (instead of cardboard), to help them achieve a level of durability and filtration far superior to most “off-the-shelf” oil filters. From the quality of the materials used to their high-quality construction, Yamaha outboard marine oil filters simply outperform and out-protect aftermarket alternatives.

How do I remove old oil from my Yamaha outboard?

You can extract spent engine oil from your Yamaha outboard engine by removing the oil pan drain screw plug. The extraction method requires the use of a vacuum extractor which is inserted down the dipstick tube and uses suction to pull the spent oil from the pan.

For inline Yamaha four-stroke outboard models (F15 to F150), the Seawell drain kit can be used to minimize the mess. On larger V6 models, to access the drain screw, remove the plastic chaps that cover the midsection of the engine. Be sure to have plenty of drain pan capacity as some of these engines can hold up to seven quarts of oil. We also recommend a petroleum sorbent pad to catch any errant drips and keep your driveway or lawn clean.

How do I install a new oil filter and add fresh Yamalube 10W-30 Full Synthetic marine motor oil?

Once you have inspected your spent oil and filter, set them aside for proper disposal. If you removed the drain screw to empty your oil, install a new crush gasket and reinstall the drain plug. The new oil filter should be removed from its package and the o-ring lubricated with a thin coat of fresh engine oil. Spin on the fresh oil filter and gently tighten with your filter wrench to seat the o-ring without over-torquing.

Loosen the yellow oil fill plug on the top of the engine and pour in fresh oil. Allow a few minutes for the oil to properly drain down into the oil pan with the engine trimmed down. Then, add just less than the stated capacity and check the oil level on the dipstick. Filling the oil to the lower level on the dipstick will help you to measure if the oil level changes over time. With your Yamaha 4-stroke outboard motor oil change complete, you are now ready to move on to completing the rest of your 100-hour service.

How do I remove the old oil filter from my Yamaha outboard motor?

First, drain the spent oil from your Yamaha outboard motor. Then, work on removing the engine oil filter. Depending on your specific Yamaha outboard model, your marine oil filter may have a drain lip that will help keep the mess to a minimum when you unscrew the old filter. But most older engines don’t have this feature. Put down absorbent rags, or place a small cup below the filter prior to removal. Using a properly sized filter wrench or socket, loosen the filter. Yamaha produces a socket for their 5GH sized filters. Some technicians make a practice of puncturing the filter to allow trapped oil to drain back into the block prior to removal, but this will ruin your ability to take the filter apart later for further inspection should you wish.

How do I flush my Yamaha 4-stroke outboard engine?

After performing a standard outboard precheck, connect a hose to your Yamaha 4-stroke outboard motor and move to the helm. Be sure that your flush attachments fit your lower unit appropriately, and remove the lower unit intake screens for the best water pickup. Note that Yamaha SHO engines and lower units with low water pickups in some horsepowers require additional flush block-offs to make sure they don’t suck air. In the absence of the OEM block off, duct tape works too.

If you have not previously run your 4-stroke outboard engine on a flush attachment, consult your owner’s manuals for specific instructions. From the helm, lower the engine into a normal running position. Verify the garden hose water is fully flowing and the area around the boat and propeller are clear. With the control in neutral and, the key lanyard hooked up, turn the key to the “run” position. Check your gauges and observe the voltage reading. Ideally, the reading should be in the 12.6-13.2V range. If lower, charge your starting battery and further investigate. Start the engine and allow it to idle – listening for any abnormal noise or vibration. Verify that the gauges are all working properly, and the engine is charging the on-board battery between 13.6-14.3V. Check for adequate water flow coming from the exhaust and tell-tale stream of your engine. If the engine runs properly on the hose, turn it off and visually re-inspect the engine for leaks after allowing it to sit for a few minutes. Reinstall the cowling, remove the flush (and tape) and you’re done!

Yamalube 10W-30 Full Synthetic motor oil is a mineral-based four-stroke outboard engine oil featuring an approved NMMA FC-W formulation for use in harsh marine environments. Yamaha's exclusive and proprietary additive package means Yamalube 4M meets or exceeds the industry standards for lubricity and corrosion protection.