Customer Ratings & Reviews

Love the stuff have always used in while I was racing and now I have a scat pack and I won’t use nothing but the best in it

I have been using Amsoil for two year’s now and I am very pleased. I am using this Signature Series in three of my vehicles. I also am using Amsoil in 3 lawn mowers, 1 snowblower and Two Boats( 1 two stroke and 2 four stroke motors.

Every year I purchase oil and filters for 2 vehicles (Hyundai) for a year of usage. I have done this for 10+ years and I also a 70's Camaro that I also do this. In a year I may drive 7k to 15k on the Hyundia's with no problem. Before the oil & filter change on one of my hyundia's I had to change a valve cover gasket and when I looked down on the cams internal workings it looked brand new with no sludge or wear. This was at 102.025 miles. I believe in the product and have for 30+ years. You also save money in the long run!

Just bought a new camary. This oil is expensive but hopefully it will add longevity to my car been using amsoil for years. Very happy customer!

The signature series has been one of the best oils I have used. I go twice the recommended oil service so a total of 10k oil changes while changing the oil filter every 5k and its been really great. Always great products and customer service THANK YOU keep up the great work!

Made the old 5.4 in my dad's truck run noticeably smoother, before it would kinda shake at idle now I swear you could stack dimes on the valve cover. Also picked up around a 1/2 mile per gallon fuel millage wise. This is the second truck we own that I have switched over to Amsoil and I continue to be impressed. I will be switching over the other vehicles we own to Amsoil

Excellent service life. Best possible fuel economy.

175k miles still going strong!!!!!!!!!

Great product and super fast shipping.

Yes, it costs more in the short term, but in the long term, it costs much less than engine repair. Started getting interested in synthetics when I worked in a test lab for mechanical gear drives. Made at least a 10% difference then and have followed Amsoil as it has constantly improved its product.

The only oil i use in my car, when i changed over to amsoil i noticed a difference in fuel consumption and how my engine ran in general. wont go to anything else

I have a 115K miles on my Genesis G-80 3-8 and this is the only oil I have ever used in it. The result it runs silky smooth and I change it ever 10K miles. "Go for it" !!!

I have used Amsoil for over 30 + years and none of my vehicles ever had sludge build up in the crank case or valve covers! Will always use and recommend this synthetic oil!

Great service from day one! The material and information provided me with a very easy process in ordering the right product! Received the product in a very timely matter!

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.