Customer Ratings & Reviews

Have been using this product since I bought my truck new in 2007. Have seen an increase in mpg. Recommend the oil.

Improved gas millage

I love this oil. I've been running in a 2006 F-150 for 6 years now (which has known sliding issues) without a hitch. I take a sample once a year and send it to a lab to get tested to make sure the engine is healthy. I put 10,000 on the oil and only added one quart in the middle over an 18 month time span. The test came back great. There were some higher metal contents due to rough towing in the mountains, but that was to be expected after what I put it through. They recommended switching to 7-8k intervals or one year, if I kept up the abuse. As long as you are not doing heavy towing, this will definitely last you the year it is guaranteed, and then some.

Been using the oil for 10yrs on all my vehicles after the recommended break in intervals. Never had any engine problems and love the extended intervals

I've used Amsoil in my vehicles for many years now. Filters also. I feel it's the best for my vehicles and that gives me peace of mind.

I have been using Amsoil for years. Started out using it in dirt bikes and ATV and now in all of my vehicles. Amsoil is nothing but quality and is a must if you care for your vehicles.

Use this oil in my pickup an it keeps everything clean in eng have pushed more than 1 Nissan eng over 100k on this oil

Good all around better in the cold less oil changes cheaper on the end less wear.

Amsoil has proven itself to our family over many years, and many different applications. Motorcycle, automobiles new and old, pickup truck, garden tractor, garden tools. We apply it to everything we can. The 5W20 has gone into our two Hyundai's both bought new. 2013 Sonata, and 2014 Elantra. Amsoil always surpasses expectations. Stays remarkably clean and right up to the full line on the dip stick.

Excellent service and product

Using 5w20 Signature Series in new Ram 1500. Love the quality of Amsoil products. I can go long chang intervals without worrying about the oil breaking down.

great motor oil as is the entire amsoil line of products

This is supposed to be the best synthetic on the market. Everyone I talk to who are mechanics swear by it.

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