Customer Ratings & Reviews

I have noticed better gas Mileage and a way smoother running engine. I can't wait to see how it preforms in the winter. My truck runs much better and efficiently after switching out my fluids. Great oil.

I Have been using Amsoil products in all my vehicles for many years with great results. The motorcycles that I use Amsoil in are high performance, high RPM engines. Inspecting the valve train on these engines tells a lot about the oil you use and I have seen great results with Amsoil.

I have use Amsoil products for my vehicles and lawn equipment for many years (20+) and enjoyed engines that start everytime, first time. The oils viscosity is so great my engine tune ups and compression checks show little to no wear and a clean surface. I was a 'Green bottle" oil user before a friend told about his expeerience with Amsoil products and I switched. So glad I did.

Best Oil to protect your car, great service.

I turn wrenches for a living and have been wanting to check out Amsoil for some time now. I got a couple chevy trucks, 1 with a lifter ticking noise on cold start ever since i got it. I've done few engine flushes with liquimoly or autozone's house brand stuff and never rid it. I used Amsoil's Engine and Transmission Flush and Signature's Series oil and for the first time ever the ticking is completely gone!! they saved me the hassle of ripping off the heads and changing the lifters they made a believer out of me and I'll NEVER use anything else!!

1998 Suburban. 300k miles. Still original compression, still pulling trailers. AmsOil its whole life.

I use Amsoil in my wife's Jeep Rubicon and it keeps the engine protected from all the 4 wheeling we do up in the mountains. We call Amsoil the good stuff.

Very good oil and the price is great fast shipping and customer service is awesome!

Love Amsoil and have for years never a problem.

My opinion best oil out there, low oil burn off, haven't had reason to get into the engine internally for looks, stays the cleanest I've ever had on the dipstick for longer miles though. Highly recommend!

After being a GM vehicle brand user for many years I started noticing performance issues while using Mobil and other large name brand oils that promised best engine oil performance available, WRONG! As many know of the sludge buildup in GM DI motors as well as the fuel management systems collapsing I switched to Amsoil Signature Series and immediately noticed a smoother running engine, better mpg’s and overall performance was just as good 5 years later and with 100k miles later as it was on the day I bought it new. If you want peak engine performance and outstanding reliability then I highly recommend using Amsoil 100% synthetic engine oil and filters. Better for the environment too as less oil changes, less chance of spills.

Love the product. Always fast and convenient shipping times. Highly recommend

Great oil and fast shipping!

I use Amsoil in my boat, truck, cars, small equipment as well. Great to deal with, fastest of shipping, and may I add, the best protection available with Amsoil. 👍🏻

Excellent product, top quality in all tests I have read. I use it in all 4 of my vehicles. However, at the prices charged, shipping should be free on all orders.

The best once a year Synthetic Oil money can buy! Been using Amsoil products for over 20 years.

Use this oil both in my van and car, vehicles both run great, get as good mileage as you can get out of a van and could last the year. I change every fall and spring .

Using this stuff for over 200,00 miles on a ‘12 FJ Cruiser. No issues, leaks or troubles of any kind. Use it in my Tundra, 175,000 miles and change it every 25,000 miles. Money savings!

Been using AMSOIL for years and really like it. when I order it bam it is here! I also like the free shipping for orders $100!

I use this oil often because of the 25000 mile guarantee. I have not tested for a full 25000 miles, but have been close to the year mark without any issues.