Customer Ratings & Reviews

I have used amsoil in my vehicle s for years I feel the quality and performance is worth the extra cost, pretty cheap insurance. My roadmaster runs a little hot and I ride in some hot area's ,I have my oil tested every oil change so far viscosity and mineral levels have been in the normal operating fields. Use it and feel safe

I have used this oil exclusively in both my 110 Twin Cam and 117 M8 engines, I've put many miles on both of them in the California heat and cold. I have personally never had any oil related issues. The price of Amsoil in my experience is cheap insurance and gives you worry free protection mile after mile.

My Ural motorcycle sounds great. Seems to be running cooler too. It's old school technology and this oil gives me confidence. Highly recommend.

Great product my bike had a noisy valve train dealership said it was normal I started using the Amsoil 20w-50 V-twin oil now my valve train is super quiet very happy with this product.

I have been using the Synthetic SEA 60 for over three years. I have a 1972 XLH , I was told the bike has not been rebuilt , its likely true as the milage was 18000 when I bought the MC. Still running very well at 50 years old...

Nice oil seems to keep a the metal parts together well, and i push my bike ride a lot of hilly terrain and its never let me down.

I started to us this oil in2006 & have been extremely satisfied with the results.

I use Amsoil in my 2014 Harley Davidson CVO Limited Not Harley oil Amsoil is the best.

Have always had good performance from this oil. I've run into some very hot summer traffic in Branson Missouri and the oil pressure and temperature stayed amazingly stable under extreme heat conditions. Will definitely keep using Amsoil.

Great engine oil

Great oil at the best price on the internet if you join their amsoil club Great value would do it again in a heartbeat!

Good product and good cuality

Engine definitely runs cooler with Amsoil. Working great for me and many others.

Have used for years!! No problems works good change at 5k miles. Have sent in for oil analysis and it looks great. At 5,000 miles it was like 3500 Miles of use.

All the reports are true ... V-Twin 20/50 works great. My spent oil at recommended intervals looks like it could go another 3,000 miles.

Perfect for my Yamaha bike

Product is to high priced

I use for my RM Indian. I will continue to use it.

What else can you say, Amsoil is the best!

My bike runs so much quieter than it ever has