Customer Ratings & Reviews

If you are looking for top protection for your second biggest investment. There is no other product that meet your needs better the Signature Series Amsoil. My only choice back by data.

I use this in my 2010 half ton Silverado and my 2011 equinox. Compared to Mobil and other oils I’ve used in the past this one is the best one so far. Quiets up motor noise, solved my engine tick on the truck and lasts a lot longer. So far at a 7,000 mile oil change it looked great. Still waiting on lab analysis. Solid product.

I have been using Amsoil since 1994. I have not have any problems with my over my vehicles with this product. I will stay with Amsoil for ever. Thanks

Every thing I own running amzoil, that includes 3 cars 4 trucks 2 4wheelers, harley davidson flht, boat, and a crotch 🚀 Not to mention that I use the used oil I drain out in lawnmowers among other things that need to be lubricated 😋 just because even at 12,000 miles there is plenty life left in this product and is completely usable!!!!!

I found this oil after several years of finding nothing aftermarket that met KIA's specs for the direct injected turbo motor. KIA uses a synthetic blend which I will not use due to my years as an engine builder. No other major manufacturer met the specs except in high-mileage oil which I cannot use in newish cars. The 25K protection guarantee plus the once a year change convinced me to try it and although I change oil and filter every 5K I still like that buffer so this is the cheapest insurance I can get for an engine that usually blows up at 60K! I gladly pay the difference for this peace of mind.

Great for every engine! handles the cold when at -25° Handles the heat when it’s 90° Driven hard at the sand dunes. Never has a burnt oil smell during changes. 180k miles engine is very clean internally.

Keep your engine running like new. I won't use anything else.

BEST motor oil ever used. Best protection, smoother operation and idle. Stays cleaner for longer milage (2500 miles and oil still looks new). I use to be a big fan of the other good oil with a funny color, but Amsoil seems better. If you want great protection, Amsoil is the one for you.

Same review as my oil filters. Will not use any others.

Arrived early, seems to be working well although I recently switched to this brand.

I have used amsoil for many years and have never had a problem. It just extends the life of an engine better than any other oil I have ever used

Amsoil had been the best oil that I've been using for years. It started with one vehicle. Eventually put Amsoil oil in all cars. This oil has helped keep engines running cooler, fuel efficient and more.

I am confident that Amsoil synthetic is a superior lubricant and have been relying on it for years.

Have used in my vehicles for over 15 years. The best!

No issues whatsoever the synthetic premier blend works terrific on our WRX

I’ve been using this signature synthetic annual or 25k mimes oil change since 2012 on my two Subaru’s and I love it I think it’s the best never had any issues with my car and it’s noticeably smoother with this oil. I will never use another brand as long as this is available.

I use AMSOIL in everything that has an engine. The best true synthetic oil on the market

An Amsoil customer since the mid seventies. I never switched for a reason; it's the best lubricant money can buy. My power equipment is subjected to extreme conditions of heat, dust, and hard work, and Amsoil has never cost me a minute of down time. You get what you pay for.

this is great oil for my motorhome

I've been using this in my 2014 Ram since new - right after the initial break-in oil was done. Engine runs perfect. No issues. Hoping to see many more thousand miles in this one using this oil.