Customer Ratings & Reviews

I first started using Amsoil 10w40 in 2015 in VTX 1800. Then in 2017 started using oil in 2014 Patriot. Cooler, quieter and better mileage. Longer intervals between changes. Will not use any other oil in any machine I own as long as Amsoil makes it.

I mean its a really gold Oil and as a memeber you get It for the same price as anything else on the market. How do you go wrong. I got 300k on my car and still going strong because of this stuff.

i use only Amsoil signature series for the past 20 years. the best lubrication, protection and no gumming.

i use only the best oils, and this one is one step ahead of everything ,car runs smooth, cooler and much efficient ,thanks!

I have been using AMSOIL in my vehicles for 37 years, for better fuel economy, better engine, transmission, and rear end performance, and much better protection for all vehicle components. I love this new oil upgrade for its protection, particularly against preignition. Pulling a trailer in hot summer weather with a turbo engine makes this kind of protection mandatory.

I've got a Shelby GT350. Voodoo engine is very special, and also very expensive to replace. While I can't 100 percent say amsoil has kept me out of trouble. I've beaten the tar out of the car at the track and barely consumed oil unlike many others. Will continue to use the product on this car!

I use this oil because of extended oil changes .... I change mine every 10000 miles but rated at 15000 miles. Currently have over 240000 miles on engine and have used it since new so very happy with engine life

Have two 5.7 hemis. One is higher compression with forged pistons( ie: burns a little oil). Oil consumption with Amsoil is 50% of other oils. valve train is noisy on 5.7 hemis. Using Amsoil reduces noise 75- 80%. MPG on both vehicles has increased. Best oil I have ever used.

I have used Amsoil products, exclusively, pretty much since I first heard about them back in 1977! Motor oil & filters, trans fluid, differential fluid, grease, MP, YOU NAME IT! I have NEVER had a lubricant-related failure, or wear-out, since! These are simply THE BEST LUBRICANTS MONEY CAN BYE...PERIOD!!!

This oil is absolutely the best product, I've been using Amsoil for more than 30 years and this is without a doubt there best product ever for most cars and trucks

I have 442,000 miles on my Nissan truck, (original engine) using amsoil 10w30; I change the filter every 6,000 miles, and the oil around 12,000, (usually). In fact, I just had to replace the original (!) valve cover gaskets last fall, after 14 years! Amsoil does the job

I have a 2018 Honda Clarity Plug In Hybrid Electric Vehicle' (PHEV). Most of my driving is local (< 50 miles) and uses the battery only so the gasoline engine can go months at a time without starting. I depend on the superior additives in Amsoil Signature Oil to hold up to the demands that only occasional engine runs with long periods between running places on the oil. With my driving schedule, Honda allows me to go 1 year between oil changes and I wouldn't trust that interval to anything but Amsoil.

Using this product in my wife's grand caravan It's always on the go So I love the long interval between changes and I know I can trust Amsoil products to get the max miles out of the vehicle

Best oil on tue market. I run it in all of my vehicles and I don't trade much so they have to last. From motorcycles to cars. Big trucks to small suvs, I trust only AMSOIL.

I drive a 2011 Tacoma. I change my oil yearly. I've only used this oil for all the oil changes. After a year, the oil on the dipstick is still gold after 15,000 miles. I do notice that at the year mark it need to be changed. The reason is because when I pour in the new oil the motor runs smoother. Great oil! It does what it says it does.

switched to amsoil years ago on a truck with 250000 mi. lifter noise went away still runs today

I have been using Signature Series oil in my trucks for years. When it is a new vehicle I switch at its first scheduled oil change. On a used vehicle, soon after purchase. I had a 2001 Silverado 5.3L purchased used with 22000 miles. Switched to Signature Series and drove it to approx. 98000 miles. Gave it to my son who went to around 150,000. Sold it they put about another 10000 on it and sold it again. Last I knew it was rusty but still running strong. As far as I know It has had no major engine work.

Most complete motor oil ever,will never put anything else in my 2017 Chevy Silverado.

I use the Signature 5W-30 motor oil in my 2014 Hyundai Elantra Sport. I was surprised the first time I changed the Amsoil Signature motor oil as to how dark the oil was when I drained it. Then it hit me that the synthetic oil was cleaning the engine from where previously the engine had only seen a multi-weight oil. One other thing I noticed is the engine temp. shows the motor is running cooler than it did before I started using AMSOIL.

I have been running this oil in all my vehicles for several years, and have been very satisfied with the performance of the oil.