Customer Ratings & Reviews

The Amsoil SS engine oil (5W-20) is a great product to help my aging vehicle drives performed like it was new. I can sense how fluid and effective my car responded to my daily high performances driving habits.

My Subaru is nearing 300000 km with the signature series 5W30 since first oil change. Winter cold starts are easy and not engine issue to report.

I have used Amsoil engine oil and oil filters for the better part of each decade dating back to the 1980s. I have had my vehicles serviced at Honda dealerships since then. Most of the time that I have had a few major engine services performed, I have asked about the condition of the engine and the oil and have always received a positive report. Currently, I drive a 2015 Honda CR-V. I believe that its average fuel economy of ~31mpg in a combination of city & highway driving is attributable to the Amsoil "Signature Series 0W-20 Synthetic Motor Oil" that I run in my CR-V's engine.

I use Amsoil for everything I can.

I use it in my 2500 chevy

Title says it all

Been using Amsoil for around 6-8 years on my 1999 Yukon with 205,000 miles had oil tested about month ago test come back with very good results no probelms at all. The 1997 truck has Amsoil in engine and transmission pulls camper 198,000 miles no issues so far. And all my small engines has Amsoil in them also

I have used this oil product since 2005 and love this synthetic old for the long life between oil changes.

The engine is running smoother and has more pep...greater response!

Have used Amsoil Signature in all of our vehicles/equipment and have never encountered engine wear issues

This oil makes a noticeable difference in cold temperature starts. The engine turns over easier leading to faster starts with less battery draw. The longer time between oil changes helps, also.

I use AMSOIL in all my equipment. Cars motorcycle, diesel work truck, power washer and generator. There is absolutely no way to go wrong using the best there is. So that's why I do it

I strictly only run this Amsoil in all my cars I would never run anything else. I use it in my 1986 Subaru Brat GL, 2002 Subaru WRX, and in my 2009 Toyota Tacoma TRD Sport. I recommend this oil to anyone who only wants the best for their cars or trucks.

Used in a 2016 chevy spark.

Once a year oil changes since car was new.

I have been using AMSOIL now for about ten years. I have been very satisfied with the quality and affordability of this oil. Will continue to use in all of my vehicles. I purchased a new 2016 Silverado and immediately replaced the engine oil with AMSOIL.

Have been using Ams oil for years especially in my 2011 Kia optima which now has 226000 miles. Die to the extended drain intervals has saved me lots of money and my engine still runs like the day I bought it.

Went to the 6mo. oil change ( 2) time and the oil after 6 months still looks clean.

I don't have any technical information, but I'm happy with the performance and mileage I'm getting in my Silverdado with a combined highway and stop and go daily commute.

I've been using this in my vehicles for years and it's always proved valuable! I notice quieter engines, improved fuel economy, and better protection. Had it analyzed in several types of engines and driving conditions and it's been an outstanding performer. Other oils do not keep the quality and consistency over the years like this does. It's the first thing I do too any new vehicle I get.