Just did the 100 hr service on my new Yamaha VF90. I read and researched for weeks before deciding what brand oil to go with. I went 10w-40 because sometimes I’m running hard in +100° temps. From all the research I did on this oil, I have no doubt that it will fulfill my expectations.

I have been using Amsoil in my Harley for year. I bought a seadoo this year and it was a no brainer for me to check the Amsoil site to see if they have an oil for it. They did not disappoint. Excellent product and highly recommend it. A friend of mine just bought a new seadoo. He called me up and ask about the first oil change. I told him to get the Amsoil. We did our oil changes together and love the product. Hands down the best decision you can make for your seadoo

Great oil very happy very fast shipping from order to my door in 2 days or less

For the same price as conventional Yamalube, I'm running what has always been considered the gold standard of oils. My boat feels quicker, it *is* more fuel efficient, and after 50 hours it still looks brand new. I'm sold.

boat has never run better and i have peace of mind knowing my engine is well protected. This is the only motor oil I will use in my 2005 yamaha.

using this in my Suzuki give peace of mind

I've been using Amsoil marine oil in my Yamaha F250's since new (after 25hr break in) in 2016. No issues, great oil.

Quality oil

Looked for this product everywhere. Finally sourced it from Amsoil. Using it in my Suzuki 50hp marine engine. Fine product. Will definitely use again.

Great oil, picked up an extra 2 mph on my Suzuki DF90. Synthetic is the way to go in outboards especially if you operate in saltwater. Motor was super quiet and ran smooth.

Have used the Amsoil marine products in my last two Yamaha SHO outboards (150 and 225). The oil shows minimal discoloration and wear even after a full season on the water, in addition it meets all of Yamaha's standards for oil per their manual. My boat is used from March to Nov and I never worry about drastic cold or hot temps impacting engine performance when running Amsoil.

I always use Amsoil in my Sea Doo & all my power boats so i know it is protected.

excellent oil. have used it for years with no problems

Good product

Delivered in 2 days. Great service. Oil is in the boat engine. 2nd change. 1st for Amsoil. Time will tell how well it works.

Best oil money can buy!

I have used Amsoil products for as long as I can remember in all of my equipment and personal vehicles and vessels nothing beats Amsoil.

Thanks Amsoil

Used it on my salt water engine for 3 years. Worked well

Simply the best protection you can buy for any watercraft. I think I actually got a slight bump in less fuel consumption with this product too. I run Amsoil in everything I own. Great oil with always superior performance.