Customer Ratings & Reviews

I FIRST DISCOVERED AMZOIL IN 1973 AS I HAD A COUSIN WHO WAS A DEALER. BUT AT THE TIME I WAS A 3000 MILE AVID OIL CHANGER FOR 30 YEARS THEN I REDISCOVERED AMZOIL PRODUCTS AS I WAS TIRED OF CHANGING OIL ONCE A MONTH OR SOINER AS I PUT ON 50,000MILES A YEAR COMMUTING SO IN 2003;I SAID WHY NOT MADE THE SWITCH TO AMZOIL AS I HAD RETIRED AND NO LONGER WAS PUTTING ALOT OF MILES ON A CAR. SO NOW I CHANGE OIL AND FILTER ONCE A YEAR OR EVERY 12,000 MILES I KNOW SINCE USING SIGNATURE SERIES I COULD JUST CHANGE OIL FILTER AND CONTINUE TO 25,000 BUT THE THOUGHT OF ADDING ONE QUART OF NEW OIL TO 6 QUARTS DIRTY OIL I AM STILL NOT SOLD ON THAT. MY ONLY REGRET IS I DIDNT USE IT 30 YEARS AGO WHEN I WAS. COMMUTTING. ALSO USE FUEL ADDITIVES QUICK SHOT , BOOST RADIATOR ADDITIVE AND THEIR EA OIL FILTERS ALL QUALITY PRODUCTS

I like the extended drain possibility of this oil. It saves me money and time. Very great performing oil.

Good value, once a year protection.

I use 0-30 in both of my Honda autos. I switch to 0-30 in the summer and 0-20 in the winter. I have 50k mi on the motor in my Ridgeline and it runs just as good as when I bought it. I would not use any thing else.

Love this oil for my silverado. Truck runs fantastic and have not had to add a drop in between oil changes. Highly recommended.

I have used this product in my 2 vehicles since their first oil change. My 2007 Tahoe has 191,000 miles on it and I expect it will perform for many years to come. Although the oil and filter are rated for 25,000 miles or once a year, I still change oil and filter every 6 months; very reasonsonable amount to spend for a bit of extra insurance. I assume my engine is finally broken in since it regularly achieves 20 mpg on the highway.

keeps my engine running great

I've been a customer for ten years now and have always used the Signature 5W-30 in my vehicles. I still own the same vehicles and change my oil once a year. I don't worry much about tracking the mileage but it usually ends up being 16,000 +\-. I'm confident their lubricant is protecting my engines at this mileage and only changing it annually has actually saved me money.

Long time user of Amsoil in all my vehicles. Wife's Honda Accord, my GMC Sierra and Corvette Z06. Outstanding performance oil, filters and gear oils. Would never use anything else. Order online one day and here the next. Oil analysis shows great results.

I like vey much AMSOIL fully suynthetic keep my engine high performance

Stopped using AMSOIL due to metal wear. The engine have never shown metal wear in testing with previous oils of different brands. The oil also changed viscosity and lost about 1/2 quart. I have a similar engine identical and 10K builds separate the two vehicles. I do not recommend 0W20 signature oil for use in city driving conditions.

I don't really have time to change my oil every 2 to 3 months, so I use amsoil, it is the best bet to keep my car running even if I only change the oil once a year. And I actually save money using Amsoil's best oil once a year than to use a cheap oil every few months. ...a no brainer if you ask me.

I have been using Amsoil since the early 1980s all my vehicles, recreational toys, and tools. I have never had any issues. The cheapening of the word "synthetic" by Castol winning their court case has made it less clear what one is actually buying when the oil is labeled synthetic. Amsoil pioneered the synthetic oil industry and can still be trusted not to hide behind using the word "synthetic" as only a marketing ploy. I also use the 0w20 oil as specified in my newer Mazda 6. I do all my own maintenance and will continue to use only Amsoil.

Using Amsoil in all my vehicles for loong years and never had engine fail!!!

I have used Amsoil Synthetic Motor Oils for years now. The engines I put it in have gone 10's of 1000's of mile further than others of the same make and models which friends have owned. The engines run cooler and run better. And I consistently get better fuel mileage. Simply Put, I'm Sold.

Changing oil 1 time a year and trusting amsoil to protect our investment. Thank you

I use And oil in my wife's car, my pick-up and my motorcycle. Have used it for years. I would highly recommend Amsoil.

I have been using Amsoil products for 18 years. I started with my 1998 Chevy K1500 Suburban which I bought new and started using Amsoil oil when it had 38,000 kms. It now has 423,000 kms and is running as strong as the day I bought it. I firmly believe that Amsoil and regular maintenance, which I do mostly myself, are the reasons why this truck has lasted so long and has run so well for all these years.

Put Amsoil Signature Series 5W-30 in our 2016 Wranglers and noticed both an increase in mileage and an end to the occasion start-up tick which happened on occasion. Never using any other oil than Amsoil in the future.

always recommend this stuff