Customer Ratings & Reviews

Been using this oil for over 40 years, been a engine saver over that time.

Been using Amsoil for over 40 years, it's the best.

Amsoil is the best oil I’ve ever used, it’s in all of my vehicles!!

...first time using Amsoil. It is suppose to be one of the first and top sythetic lubricants ever developed... we'll see how superior it is in the long run?!

Great product. Fast shipping. Engine ran smoother and quieter. 2003 Chevy s10 4.3L with 78,000 miles. I definitely recommend this oil and will be ordering more.

It is a great oil, with outstanding protection, at a great price. It is the only oil I put in my wife's 2019 QX50. I did also use it in my 2015 Ford F-150 that had the 2.7 EcoBoost engine, but I now have a 2019 Ford F-150 with the 3.0 liter PowerStroke and it can only take a special synthetic oil made for it by Ford. And that specific oil can only be used in the 3.0 liter and one other smaller diesel that is in the Ford Transitl. I carefully checked the specs and none of you diesel oils could be put in it, or I would be using it now.

Have used AMSOIL products for over 30 years in all my and extended families vehicles.Passenger cars,pickup trucks,pickups pulling yravel trailers,diesel pickups,diesel motor homes,small yard equipment and other equipment.I am more than satisfied with all products.I was introduced to AMSOIL when I worked for a company that used AMSOIL in fleet of over 100 trucks.

I switched from Mobil 1 to Signature Series Synthetic 3 years ago. My buddy races his Vette and runs it hard without issue. I feel confident that my Vette runs smoother and cooler. I also use it in my wife’s new Traverse.

I own a 2007 Chrysler Town and country and it's one of the best oils that I've used so far. I get so much more gallons for the mileage.

My daughter uses it in her 2011 ford escape. Loves it.

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.