Customer Ratings & Reviews

I have been using Amsoil products over 20 years now and have been pleased with all the performance and durability aspects. Have used the Signature blend oils in many cars for the extended drain intervals and have never experienced any failure, wear or usage problems.... period. Why would I use anything else?

i was already using 0-20 in my Toyota and my Subaru, so I didn't really notice a difference in mileage. Oil analysis suggests the extended oil changes are easily doable, but I'll do another at 25000 to make me feel better. Swapping just the oil filter isn't bad at all........just not what I'm used to.

Put it in my 125K, 2005 Lexus RX 330, along with the Amsoil filter. Every thing fine so far. I'm looking forward to what the oil looks like in 10K miles. Actually, looks probably don't mean much. Would need to test.

i have used amsoil in my 2002 chevy avalanche with a 5.3 liter engine. i have 140,000 miles on the engine and oil consumption is less than a pint every 8,000 miles. i also use amsoil in my wifes 2003 chevy trailblazer, it has 121,000 miles and does not use any oil. i go 8,000 miles between oil changes. i also use amsoil synthhetic transmission fluid in both vechiles.

I've used AMSOIL exclusively in my previous and current Jeep Grand Cherokee Overland. I learned of Amsoil through an Internet search looking for the best motor oil. I'm more interested in the quality of the oil than I am with extended intervals. I trusted the reviews and comparisons and I felt the difference in the performance of the 8 cylinder Hemi. Just seems(s) to run more smoothly. I can't see/feel any difference between the Signature Series and the previous flagship BUT I'm now consistently getting 20mpg on my daily 120 mile, highway commute. Prior to changing over to the SE I was at 18-19mpg so something has changed for the better.

I use this oil in my 2012 Nissan Rogue and my wife's 2011 Nissan Juke (Has a Turbocharger in it). I love being able to go 15,000 miles/1yr to do an oil change. Saves me money and I don't have to make time 3-4 times a year to make an appointment for an oil change. It may cost more upfront for the oil and filter but it is cheaper by the end. Figure at least $20-30 per basic oil change multiply that by 4 times a year, you just spent $80-120 for 4 oil changes in that one year, for a basic oil change at every 3,000 miles. If you get this Signature Series and a Ea filter you can go 15,000 miles. You get and extra 3,000 miles or one less oil change. You just saves money right there. If your vehicle has a Turbocharger in it, you must use Signature Series. The engines get way to hot for the basic cheap oil. Even if you get free oil changes from a dealership, they use basic or synthetic blend oil, and most likely and unknown or cheap oil filter. Do you want to put cheap stuff in your vehicle? I don't.

I have been using the Signature Series for many years in my 2002 Olds Bravada. I purchased it new and have always used synthetic oil. The main reason I use Amsoil Sig series is the long intervals. When a person can change their oil once a year vs 4 times a year it was a no brainer. Once a year is much less work for me and it's WAY CHEAPER!!! I highly recommend using Amsoil and I believe when you try it u will be extremely impressed.

I've been using Signature series 5w-30 for over twenty years and will use no-other because it simply continues to be the best available synthetic motor oil on the market. The mechanic I use puts it into my engine, transmission, radiator, and differential. I have a total of over one hundred thousand miles of trouble free driving on my vehicles.

I am a 15yr customer. I have been running AMSOIL in all my vehicles. One of my cars is a 97 Geo Metro with a 5 speed trans. The car has 320,000 miles on it. I use it daily to run errands. I didn't want to part with the 52 mpg so I rebuilt the engine. The transmission was hard to shift. After running amsoil 80-90w trans- oil for about a month it now shifts smooth. I have been driving both of my cars with confidence. I run amsoil 5w-20 signature series motor oil in both of my cars. The only negative I have is that I wish shipping was free. Jerry

Use it in my Corvette C6

AMSOIL synthetic is the best!

Title says it all. I bought this for my first oil change on my 2015 Ford Focus ST. I'm now on my second oil change using the same product. My engine oil temps run consistently 15-20 degrees cooler than before. Will never go back to another brand again.

Have used Your products for over 20 years in all my vehicles

Ive got Amsoil in everything from my 87 Bronco to my 06 Expy. Motor oil transmission fluid in both. My wife has the European oil in her Turbo Beetle and my mowers have the 4 stroke small engine oil. I use everything from zrod 20-50 to 5w -40 European turbo safe oil

I use this product and Amsoil 0W-30 in my vehicles. They are both great products.

The wear protection is phenomenonal, the performance improvements are noticeable and the extended drain intervals are what make Amsoil my favorite product. I currently run this oil in a half ton (V8) and SUV (V8) which put between 30000-40000 miles a year each.

after 1 year oil is in better shape in color and overall viscosity that conventional oil i use the recommended amsoil filter with cold winters and hot summers pulling a boat of 5000 saves me money only changing once a year instead of 3 with regular oil

I have been running Amsoil in my vechicles for over 10 years, now I am using 5 W 20 motor oil in my jk which I wheel often as well as daily drive, the oil is great and my vechicle appreciates it.

When I went to all synthetic products on the motor home the transmission stopped slipping and my mileage also improved.

I ran this oil on the 15,000 mile program because I'm on the gas pretty heavy at times. The first cycle went well, but the next cycle I pulled my trailer a lot and the oil was history at 6,000. Truck also had lifter tick at start up when motor was already at running temp. Went back to conventional oil and lifter tick was gone.