Customer Ratings & Reviews

I drive a personal vehicle for my job, averaging about 60K miles per year. I started using Amsoil Signature Series over 20 years ago at a friend's suggestion. As soon as I bought the new vehicle, I would drain the existing oil, flush the engine and replace it with Amsoil. EVERY vehicle I have owned since I switched to Amsoil has never had a day of engine trouble, had better gas mileage than predicted, started in the cold Chicago winters like it was summer and blew past 250K miles still purring. I've even had one car manufacturer ask to buy back the engine from me when I was done with the vehicle. I won't put anything but Amsoil in my vehicles. It's just that simple.

310,000 miles on a Dodge Grand Caravan V6 engine. This is all I need to say, except my previous vehicle was a Geo Metro with 210,000 miles on it. This stuff works.

I use in all my vehicles and small engines. 1 year, 25,000 miles or 700 hours. Great product.

Just purchased a used truck,tracked the first tank of fuel at 11.4 ,changed all fluids,motor and trans to amsoil . Next reading on fuel came to 15.4 ,significant increase and which tells me that the amoil does what it claims. Will be changing the rear end fluids tomorrow. Stay posted

Always use Amsoil. Best thing or any motor.

Last longer then average oil

Use this product in my 2007 G35 Coupe and can say that i definitely can tell a difference in performance.

Amsoil is the longest best wear protection money can buy. I use it in every machine I own. It has been a product that has never let me down. Thanks Amsoil.

Use in competition ski boat 60-120 degrees .

I've had Amsoil in my 2003 F-150 since I bought it in 2005 and still going strong, no smoke, no rattling. It's a product I always recommend

The only oil I trust in my RAM I have used this oil since my truck was new

The Signature Series Motor oil is an effective product that makes you vehicle run better and last longer even if you are not as caring for it that you can be.

Ever since I've started to use Amsoil products, my vehicles have been running more efficiently. I would highly recommend Amsoil products to anyone wishing to reduce the wear and tear on their vehicles.

To keep all mine and my family cars and truck and motorcycles running at there best

Number one in protection and performance.

Since back in 80s amsoil rep sold me on this oil. This is the best motor oil .

I use signature series 5W-30 to change my truck's oil

It is a great product, can do 15,000 oil changes (turbo) with 15,000 filter with superior protection at a cost less than a regular oil change. Can't beat that!!

I will be using this in my 2017 Chevy Silverado 4x4 for as long as I own it! Great product!

Great pill always looks good after extended drain intervals!!