Customer Ratings & Reviews

Best motor oil available

✔ Started using it in my 1999 Ford Ranger – Engine lasted 300,000 miles, immaculate condition. ✔ Chassis rusted out, but the engine? Flawless. That tells you all you need to know. ✔ Now using Signature Series in my 2025 Ford Maverick 2.0L EcoBoost – Switched at 500 miles right after break-in. ✔ Turbocharged engines need the best protection – AMSOIL lowers temps, reduces bearing friction, and maximizes longevity. ✔ Plan: 8,000-9,000 mile intervals with annual oil testing to monitor engine health. 🔹 Final Verdict: If you own a turbocharged engine, this is the oil you want. It’s not just marketing—it actually delivers better wear protection, stability, and performance under extreme conditions. Simply the best.

Excellent oil - eliminates the dreaded lifter tick on the Jeep hemi 6.4 liter. Deliver is supper quick. Great service, great product.

Best oil around! Won’t use anything else

Awesome product could tell a difference in performance and oil still looked new

A+++++++++all the way!!!!!

Well after check on alot of oil test on internet, , Amsoil had they best drain when in cold weather,

Only oil I’ve found that might do better than Valvoline

Have used AMSOIL's P.I. Improver since it first came out. Still use it at 1 oz. per 10 gallons. Have never had a fuel related issue and all of my vehicles get fuel mileage like they did when new.

When temperatures were below zero here . I had an easy time starting my vehicle thanks this smooth flowing protecting product . No funny noises or concerns about engine damage like conventional oils can cause sitting like honey in the oil pan . With Amsoil the engine is able to warm up faster and off to work on time I go. Better gas mileage and more horsepower a real winner . Since 1979 I have been running with the best .

I grew up with “ California Car culture” where what you drove that’s how you were defined by many. If you take better care of your car than yourself, this is how we roll. Since 1992, every car, every transmission, every transfer case and differential, even every small engine I own has been lubricated with Amsoil. Never a failure that was lube related. Forever a customer.

Reduced engine noise, increased fuel mileage & longer oil change intervals. I highly recommend this oil to anyone.

First time trying AMSOIL, recommended by a friend. My 2005 GMC Sierra has almost 400K on it. (Original owner) And what a difference I've seen. The power and smoothness of the engine, like it's brand new. Looking forward to see how it lasts on this high mileage engine. Just ordered some for the wife's 2013 Buick Encore.

I only use AMSOIL on all my vehicles, 2 cars and 2 motorcycles. Whenever I need to do an engine refresh or inspection, everything is always clean and like new condition. Oil is always cheaper than an engine, transmission or diff. Go AMSOIL or go broke.

Great and I’m gonna order again soon

Love it

It works well as long as my mechanic doesn't overfill my crankcase of course then again I'd buy the exact number of Courts but other than that I love your product

No complaints. Performed the engine flush and installed the signature series motor oil. My truck runs so smooth and it's quiet. Would highly recommend.

This has been some of the best oil I have used. Nothing compares to the quality of this oil. I use Amsoil on both my vehicles and will continue for the rest of the life of my vehicles.

Six months now, my oil is still good, especially I always drive my car to work every day. I'll recommend this oil to my friends