Customer Ratings & Reviews

Replaced the eng oil with Amsoil. I could tell a difference from the get go. Amsoil is good stuff. Have a Subbie TX with a Turbo, this is the only oil I will ever use in this Subbie.

Gained 2mpg in my Ford f150. Works great.

Using this oil for past 5 years for our three Toyotas. The best oil so fur.

Love the signature 10 W 30 amazing how much quieter the engines get. I use the signature in my 2013 Honda Odyssey, 2007 Honda Accord, 1998 Honda Accord, and 2014 Subaru Crosstrek. Big fan of all Amsoil products.

I have used the Signature Series oil for many years. I only change it once a year on all my vehicles which will approach 25,000 miles on average. This is the only oil I will use and it has been fantastic!

Great oil for my vehicle. Silenced the ticking of the valves. Especially on initial start ups of the day.

Love this stuff!

Accurate and tested to be one of the best motor oil.

Happy love it I have been using this product for years fantastic

Happy with the AMSOIL Signature 0W-20 Synthetic motor oil. Been using it for many years.

have used this product for 5 years and have had no related problem with this oil.

Great products

work truck and cars

I switched over from 5w20 to 0w30 because I use my 13 Ram 5.7 Hemi engine for towing ,this engine runs great, went on vacation this April to Tennessee, didn't Tow any thing my average millage is now (Hwy)19.2,this is Great the engine just feels good,been using Amsoil since 1988.

I use signature 5W 30 in my 2007 Range Rover Sport Super Charged. I will not use any other brand, the truck has had regular oil in it from factory to the 5000 mile mark, since then we have only used Amsoil signature synthetic and rightfully so the Range Rover has 245k miles and it' still as strong as the first week we owned it. Thank you Mr Amsoil.

Right for the Tundra!

Great product

I use this in my new car.

Product used in a 2016 Mustang GT with Roush supercharger. 690 HP which is up from 670 on factory oil. If you cant feel the difference using AMsoil, dont ride a bicycle, motorcycle, or fly an airplane!

I uesd amsoil in my mother car. Did a engine flush. With her oil change. When it was done. She drove to her house which is up a mountain. She notice right away how smooth the engine running. Big difference she said. Thats from a women who dosent know about different oils.