Customer Ratings & Reviews

Since the day I first put this oil in my car's engine, never had any grinding or locking issues. Amazing product. Very reliable. Orders get shipped on time and arrive on time. Won't go wrong with using this fine line of synthetics.

MY FAMILY ALSO USES IT HOW ABOUT THAT

I use the oil filter and the 25,000 mile oil for the mileage listed or once a year, whichever comes first. The once a year always comes first for me. Thanks for such a good oil.

Bought the oil. Best purchase decision ever. Engine is purring like a kitten, with the best mph ever.

Put in son's power equipment and all of a our Harley Davidsons plus our Roush Supercharged Pickup.

Would buy again

I run the full line of Amsoil synthetics in all my vehicles, my F150 Ecoboost is my primary work vehicle, I drive 7 to 8 thousand miles a month, I am a regional manager with a multi state territory, Amsoil makes excellent products Ive never had any issues

I've been using this AMSOIL for several years now. I saw immediate improvements in my daily commuter just from switching to their oil & filter

I have been using Amsoil for over 25 years, although somewhat pricey, well worth it! I do oil changes every 10,000 miles and have put as much as 275,000 on my car without any engine knocks or breakdowns. I realize they recommend going 25,000 between complete changes, but I prefer to go every 10(k). This is the best of the best synthetic oil on the market!!

I have been using Amsoil for nearly 10 years now and the extended service intervals are a time and cost saver. I have gone 22,000 miles in normal New England weather and the oil was still slightly golden. Thanks.

Excellent product, exceeds my expectations and I do change my oil and filters as Amsoil recommendations.

Keeps my Jeep running good

I find this oil to be worthy and the best of all oils. I can not believe that I put this oil in my 2005, Dodge Ram, 98000 miles, 4X4, Quad Cab, Hemi over 3000 miles ago, I just checked the oil and it still looks like the day I put it in. I used to have a little lifter tick, that went away and surprisingly I am getting a few miles better per. gallon, my truck simply runs smoother and quieter. Yes, this oil cost more, believe me my truck takes 7 courts, but I personally feel that if I can keep my truck for another 10 years for a little more now, then that is a big savings to me in more ways then one because, I like my truck, it still looks great and drives great, the best part is, it's paid off years ago and I don't see any reason to put myself in debt because I wanted to save a few bucks on oil.

AMSOIL formulated this oil specifically for my Ford Coyote V8 engine, why would I use anything else? My vehicle is heavily modified for performance, I need the highest performing motor oil available and from the research I have made on my own that oil is AMSOIL. I am an engineer by profession, I want things to be precise and exacting, that's what I get with AMSOIL.

I like using an oil product that I can trust, and this is it. I get better gas mileage and feel like my engine produces more power. Amsoil is a proven product that has stood the test of time. Thank you for offering this to us.

My 07' Toyota FJ Cruiser runs great on this product, much better than any competing brands. I use signiature series and put a high amount of miles on my truck in a very short time so I change my oil around every 5-6 thousand miles. Fast shipping. Good customer service. Definitely a quality product and a smart purchase for any vehicle owner.

This is a great fully synthetic oil that never disappoints. I love the extended change intervals that I get with this product. I can run this oil for extended drain intervals and not worry one bit due to the quality of this product.

01 civic ex honda,306460 miles,still gets 38mpg.had used 0-20 signature since 25,000 miles.The numbers speak for the oil.

I think amsoil products are pricing themselves out of the market. My last order for oil and filters was over 800.00 dollars and while I love the product and the cars have lots of miles on them. Almost 75.00 for and oil and filter change is getting out of control!!!! Going to be looking for an alternative for my next purchase

Regular oil for my truck.