Customer Ratings & Reviews

Best oil I have ever used. My twin turbo engine runs smoother than with the other the brand I was using. Also, I had a great experience with their customer service. Great product and service. Customer for life.

I run this oil in my C5 corvette. This car is used for HPDE and autocross. I only have 1 season with this car but I have a decade of experience with Amsoil. I don't want to keep a spare engine on hand, so this is the stuff I want in my race car!

Great product, keeps my car running like new ,wouldn't change for anything else.

Amsoil is by far superior to any other oil I have ever used. The motorcycle oil is fabulous.My harley runs at least 20 degrees cooler in summer.I use Amsoil in every application where a superior lubricant is needed. You only get what you pay for.You get the very best with Amsoil products.My salesman Greg is the best!

I’ve used the signature series oil for years. 200,000 on my last truck never had any problems. 175,000 on my current truck and still going strong. I travel and pull a camper we’re I go with a 1/2 ton truck. I love the fact that I can go 20,000 miles without changing oil. So that’s a money savings deal you can’t beat with the cost of oil changes ever 5,000 with conventional oil.

I believe it's the best one out there for my F-150 EcoBoost

this oil is so good , i am so happy that i had found a real ' 100% synthetic

Use in 2010 Infiniti G37

I'm glad I switched all my vehicles over to Amsoil.

Loyal customer for a reason. Best synthetic on the market.

Extremely high quality oil at reasonable prices.. Run your engine clean with Amsoil..You won't regret it.

Amsoil is the best for todays modern engines that demand oils be tougher to cope with hotter and more fuel efficient engines.

Amsoil is the best for todays modern engines that demand oils be tougher to cope with hotter and more fuel efficient engines.

Great product!!!

Best oil around. Can't beat joining for 20 dollars a year to get online discount and mailed I usually get within 2 days.

I use amsoil in everything I own it been rated the best on the market I got to make everything I own last as long as possible oil won't be the reason it wears out

Highly recommend Amsoil Synthetic Oils and other lubricants - they are the highest quality

Hands down the best oil on the planet. If you own a 5.4 3v, do yourself a favor and buy this immediately. Thank me later

not to mention it has a longer life than other oils, but the normal "tick" a lot of Hemi owners experience just sort of went away. Nice. I love this oil

I have been using Amsoil in both my cars and motorcycles for 13 years and it has earned my trust in giving my engines the best protection I can use. I really am a fan of the signature series as it gives your engines even more long lasting protection. I like to run an oil that is allot better than it needs to be. With my factory warranty over now I can extend the oil changes from 4 thou miles to 6 thou easy. I could probably run it to 10 thousand miles or once a year using the extended life oil filter like my motorcycle but I only put on 5 thou a year on my bike. New England you have a wide variety of weather and temperatures and the Amsoil to keep my systems moisture and with hot and cold swings protected plus I light tow and it helps there too.