Customer Ratings & Reviews

I use it in my 1992 caprice classic. It has 300000 klm on it. Runs very well.

Just sold my 2007 Prius with 200K miles and used Signature oil all the time. Used about 1/4 quart in top-up in 18K miles before oil change annually with Amsoil filters. No smoke, no drips, no leaks; DEPENDABLE !!

This is superior oil to anything else that I have tried,it’s absolutely the best out there and the company is great as well.

The last several winters, it has been added to the mix, great product.

Been using it for years, love it.

I have used this product for several years and my vehicle has 211,000 miles on it and running fine.

I've been using only AMSOIL products in all my cars, trucks, motorcycles, and lawn equipment for almost 20 years. I won't ever change that. Having the ability to use 1 yr extended drain service saves time, money, and petroleum product disposal, a win/win all the way around. Zero oil-related issues and anecdotally I've had several motorcycle motors run well way past the time others are doing rebuilds.

I've been using only AMSOIL products in all my cars, trucks, motorcycles, and lawn equipment for almost 20 years. I won't ever change that. Having the ability to use 1 yr extended drain service saves time, money, and petroleum product disposal, a win/win all the way around. Zero oil-related issues and anecdotally I've had several motorcycle motors run well way past the time others are doing rebuilds.

I use this in my 2017 Jeep Compass with 94,987 mile. We drive a ton and every 12,000 miles when we change the oil it still has a light brown tint to it. Great product does what it say. I have had 0 oil related issues and I have had the jeep since it was new.

I can now change my oil once a year and never worry about it.

I used this oil to make vinegar & oil salad dressing. Didn’t taste too good- so I used the remainder in my Honda Civic. The car seems to like it much better. I’ve used Amsoil products for years in all my cars & lawn equipment. None better. Not too good in salads though.

Just purchased the wife a new Lexus RX 350 and with only 500 miles on it ,the only oil it will see for from here on out is Amsoil.

So far oil appears to be a winner, hands-down.Engine seems quieter as well.Thanks.2018 Mustang GT.

I change oil when the snow tire go on and when they come off. I consider Amsoil additional insurance

I have bought other brand synthetic oil but when use in my truck weekly I need to add oil. When I started using Amsoil signature oil in truck did not use one drop of oil. This is the best oil out there to buy

Seems to be one of the best out there. I own a 2019 Ram 2500 with the 6.4 HEMI motor. There are a lot of discussions and complaints out there reguarding valve noise with this motor. I have used this oil since my first change at 2500 miles and don't have any valve noise or complaints.

My truck loves this oil! It runs so good with it!!

Just knowing that I'm running the best motor oil (AMSOIL Full Synthetic 5W-30) in my 287 c.i. engine, gives me joy and great piece of mind.

This oil meets and exceeds your expectations of quality. Owning a turbo car as you know oil get hot especially in the summer months , My car filled with Amsoil never seen oil temps higher than 200 degrees vs the competition oil that seen 220 degrees + with the same daily driving habits and route. The competition oil cooked and caked up on my dipstick when I did my oil change switching back to amsoil never once did Amsoil break down . I highly recommend this oil .