Customer Ratings & Reviews

Great stuff...pour it in and don't look back

Excellent product, improves gas mileage and reduces engine wear.

Great product, I use it in all my car's.

Amsoil is the only oil that I purchase, I said purchase be cause I don't use oil (or burn oil) in1994 a friend had a cat engine in his over the road tractor trailer rig, He had 1.2 Million miles on it and a cam follower broke on the valves so he had to pull the hole front end down to replace the cam. He told the shop to go ahead and do a in frame overhaul so they mike all the parts, and they were all at Factory specs. that's when I be came a Amsoil customer. I Have It in my Truck, Car, Harley, Quads, lawnmower, power washer. Boat, and Chain saw. I wont use any thing else. It wont break down with Heat. Curtis T. Sherwood

I use signature series for all my vehicles. It saves me time & money. I only have to change my oils once a year with the 25000 mile or 12 months.

I have been using the Amsoil Signature series oil for over 15 years in my vehicles. Living in the northern part of Alberta, Canada and travelling even further north numerous times of the year made this one of the best decisions I made. For hours of highway speeds and the sometimes (especially in the winter months) at extreme low temperatures this is the only oil that has given me the confidence and reliability I have ever encountered.

I started using Amsoil in high school in 1974, because math teacher was a distributor. I have used it every since. Best oil on the market! I have used almost eight products so far.

year round for Ford Focus

Use it in my 06 Pathfinder and 14 Evo X. Great cold start up and even better protection once hot. Viscosity breakdown is almost non-existent. I have been using AMSOIL for years in engines, transmissions(where applicable), transfer cases, differentials, and firearms. Actually, my Evo X tuner(renown CBRD in York, PA) told me to use AMSOIL. Great products.

Used in my pickup along with Amsoil gear oil in the rear end and noticed an increase in fuel mileage.

This product was used in a Ford Mustang GT CS

This oil and filter made my 5.7L V8 Toyota Tundra a whole other animal! Engine definitely runs smoother than the last 240k miles I did on it and I have noticed about a 1mpg gain. I also noticed a smoother acceleration and a bit faster too! If u want a long lasting a smooth running engine then this is definitely the oil for you.

I use this oil in my work truck. H ave 186,000 trouble free miles and love the fact I only need to change oil only 1 time a year.

Its great stuff use it in my 1999 Tahoe

The turbocharged engine in my car is very picky on oil, and AMSOIL is one of two brands that I had been using. As the local stores here so not stock Amsoil anymore, I purchased online and it was a great experience - lightning shipping and product as ordered. Thank you so much again, Leo.

Amsoil is a great company providing a great product.

I use Amsoil in all my motors. Gas and Diesel. Cars , Pickup Diesel , Tractor Diesel, Stays cleaner and last longer. Has reduced oil consumption on high mileage motors.

I don't put anything else in my vehicles.

Bought a new Tundra for the wife. When due for the first change I went wild and changed it all to amsoil. I believe this coupled with CAI is what gave us the 1.5mi gas increase!! Plus always better with the piece of mind I get with my amsoil products.

Best in class in quality. Best n class in service. Best in class delivery. (In my book)