Customer Ratings & Reviews

I've used many leading brands of oil, and have used their highest quality products, such as Mobil 1 Annual Protection and Pennzoil Ultra Platinum. It's difficult to measure wear protection without legitimate testing, but I can definitely say that Amsoil Signature Series burns off less than any other oil I've ever used.

Engine runs very smooth! Great product.

I purchased Amsoil Synthetic oils after some extensive research. I’m happy to say that my new CX5 Turbo is running smoother then ever. It will definitely be the only oil I will use from now on. It’s a little more expensive but worth it.

I was recommended by a friend to try amsoil and gave it a try and all i can say is it is amazing. keeps my car running and performing how it should. I definitely recommend to anyone who wants to protect there car and keep it running as it should!

I never thought you would be able to feel and hear the difference. We now run this in all our vehicles as well as our friends and families auto's. Most recently we changed oil in our company box truck and you can hear the difference in the engine. She's runs smooth now with less noise. The adage you get what you pay for truly applies here. I will never use any other oil now. I highly recommend Amsoil!

I've been using this in my C7 Z06 and love it. All track days and daily drives. Just the right mix.

I have switched to using Amsoil products about a year ago when I was referred by a preferred client. Every oil change since then, I have been thoroughly impressed with the consistency, color, etc of the oil that has come out of my car. I change oil every 5000 miles out of habit and The oil that is replaced still has plenty of life in it when I do!

Great product. Haven’t had any issues even with going over 1k on my oil change.

When I had a knock in the lower end of the motor, I switched to Amsoil. The knock went away, and I went from having too add a quart of other brand oil a month to adding no extra Amsoil at all. When I put 5 quarts in at the oil change, I still had 5 quarts at the next oil change. Truck was still running great at 200,000 miles when I traded it in. I continue to use Amsoil with great results.

Amsoil makes incredible synthetic oil, and I wouldn't put anything else in my '20 Ford Raptor.

I have been using only AMSOIL products since 1978! I have recommended the line to many others, who are also totally satisfied, and note performance improvement and much greater reliability.

Shipped quickly, my vehicle’s engine is running smoothly thanks to Amsoil.

Engine runs cooler and with less vibration. I run AMSoil for all fluids on all of my vehicles. Wont use any other brand.

Been using Amsoil for years and now my sons have also begun doing their own mainframe and also use Amsoil. Always recommend for piece of mind.

Switched from Mobil 1 in 2011 Corvette. Corvette runs smoother..cooler...better mileage. Started using in 09 Jaguar XF..noticeable difference. Great lubrication qualities...highly recommend

Amsoil oil filters have kept our 2 Hyundai engines in excellent shape. They are part of the Amsoil oil change that includes Signature 5W20 oil, upper cylinder treatment, and PI fuel treatment. Bought since new, the cars (Sonata 2013; Elantra 2014) perform very well and we plan to keep them as long as possible. Amsoil products and the Amsoil team are offering the best products. They are trustworthy and stand behind their products 100%.

Recommend this product

I've been using amsoil since the 80s best oil on the market. I've used all other brands, amsoil wins hands down my opinion, example 77 Porsche gears sticking changed with Amazon oil 80/ 90 weight oil, gears shifted like butter afterwards.

Received the oil quickly and at a very good price, highly recommend!

This is the best 10w-30 I know for a street car for high performance applications such as track days. Redline and Motul 300v is more expensive, and not as good as a street oil. Only thing I wish was that it came in 5quart size as my cars take at minimum that amount