I redline my RAM almost every trip and went 17000km last oil change and could have gone another 5000km

Never ran any high end synthetics so decided to try signature series, within 5 seconds of starting the motor; it has never run quieter. Barely any valvetrain noise on my 3.5L ecoboost, looking forward to seeing how it looks when I change it out in 11 months.

So far engine is smooth

Ive been using Amsoil Signature Series in all my rides for plus 20yrs. I usually keep my cars & trucks 150-200k miles or until the wheels fall off, trouble free, which i accredit to Amsoil. I've used it in vehicles that have had bad reputations for engine/trans breakdowns and had no problems. I highly recommend it.

Great product, been using for years, would definitely recommend!

Great oil, will continue to order as needed

Great oil, will continue to order as needed

Engine runs much smoother than previous oils after 5,000 miles from oil change

Superior product and amazing protection! Your vehicle deserves an oil this good!

When I purchased a new car for my wife I decide to only use the best because this was her retirement car. After all the research I’ve done which was extensive this is the only oil that I will use for my vehicle‘s and motorcycle.

Been using this stuff for about a year now and it’s been great, my engine has never felt healthier!

You keep sending me promos and I order but do not get any promos

I've been using Amsoil oil since the mid 70's with many vehicles having turbos. I believe it is the best you can get.

I recommend Amsoil to everyone It make my car run better smoother I love it so much I call it the goal liquid👍👍

I used to use royal purple but only thing I use now is amsoil can't go wrong won't be disappointed

I only use Amsoil in all of my vehicles because it provides the best protection.

Only oil that I’ve used that stopped the cold start ticking in my Jeep Wrangler with a 3.6 Pentastar.

Product is excellent, but my oil filter was not included in my purchased. I had to contact contact Amsoil and complain that my oil filter did not arrive with my oil.

I have been using Amsoil products for past 20 years and can vouch for it.

Great product