We have a 23 ft Chapparal with a Chevy 454 and a Mercruiser Bravo3 outdrive. The 454 has 750 hours and runs as smooth as silk. The Amsoil 10W40 Marine is very special. The throttle response is incredible and the consumption of fuel is minimal. Considering this is a Chevy / Mercruiser454 I expected this boat to be a gas guzzler. The Mercruiser 7.4 liter has multi port fuel injection and is far more efficient than the Chevy 350 Mercruiser. Using Amsoil synthetic has made a tremendous difference. We cruise our boat on Lake Geneva in southern Wisconsin, and can circle the 25 to 26 miles around the lake using a little more than 5 gallons of fuel. The previous owner was somewhat cheap and used 10W40 conventional oil. He got about 3 mpg and refused to believe the difference I got using Amsoil. My fuel savings over the course of the Summer paid for the 6 qts of of Amsoil 3 times over using conventional oil. This is a clear cut example of cost versus price. I can actually say that the Amsoil literally paid for itself over lower priced conventional oil.
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
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.
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.