Customer Ratings & Reviews

I used to use only javelins oil until I got this oil. Will never go back to any other brand!!!!!!!

Been using for very long time. Its the best.

Why not available in the big 3.78 l bottles?

Excelente aceite 100% recomendados THE BEST

Given the high quality of this oil, I know my engine is receiving superior protection. The wide, unsealed mouth on the quart-size container results in an easy and quick pour.

Smoothed the engine out. But more so, trusting in the data to extend oil life with no sludge build-up.

Fast shipping good service !!

As a former F-4 Fighter Crew Chief where precision maintenance is critical I trust AMSOIL HIGHLY for protecting critical engine parts.

When changing my oil I thought I had an extra quart of this Amsoil oil on hand from previous oil changes but in fact I didn’t. Order the oil needed and was at my doorstep in 2 days way before it was supposed to arrive. It’s like they knew that I was probably a quart short and the expedited the order. The probably knew I ordered 5 quarts when my car needs 6. That’s what I call customer service. Thanks Amsoil distributors.

Have been using this oil for a 1 1/2 years changing it at about 8,000 miles and 10% oil life at every oil change and the used oil comes comes out pretty clear and seems like I can let it go for another 5,000 miles. Manufacturer on my Charger states never to go over 10,000 miles. I drive mostly Highway Driving so 15,000 miles with this oil would be no problem for anyone to drive. Always follow Manufacturer instructions but peace of mind if you go over oil life monitoring system in your car.

I don't personally use this specific oil. I facilitate ordering it for my son to use in their 2013 Subaru Forester which requires this weight. the Extended-Life product is a good option for both protection and price.

Gained 8-12 lbs of oil pressure in my 2008 Silverado over clean Mobil 1 High Mileage of the same 10w40 grade.

Happy with my high mileage car

Truck runs great with this oil👍👍

Great product

I have noticed a significant change in my engine’s performance, idle has decreased runs a lot smoother now.

The Extended-Life 5W-30 is a good balance in value and performance. I service some of my family's cars and this saves me some money and with still providing outstanding protection. I use different weights per manufacturer's recommendations.

This stuff keeps you engine feeling smooth and running good.

Been using Amsoil in all my equipment for more than 20+ yrs, so it was just natural to start using it in the 2015 F150 I recently purchased. The engine and oil are both running about 25° cooler. There was a slight misfire,which has progressively gone away as the filter has started cleaning the inside of the motor. Getting 25+ mpg around town which I'm happy with, 28+/- on hwy! 2.7 V6 with 107k mi. Had a little "chatter" at start up, but that's gone. Way more power,just tap the pedal and hold on, lol. Yeah, I'm a happy camper!

This oil gives me the peace of mind that my engine is being protected for more miles than my usual change intervals. Nice to know you have miles to spare if something comes up & more miles need to be added before the oil is changed.