Customer Ratings & Reviews

Perfect oil.

I use this on my 3 diesel trucks. 1985, 1994 and 2001 F 350.

I am rough on my trucks farm use hauling ext... Has 300k+ doesn't lose it burn a drop still run 25k between oil changes love my amsoil

I have used Amsoil for 20 years. I like the extended oil change intervals, it saves me money and doesn't damage my equipment. I took oil samples and had them tested after 18,000 miles. They came back no wear and more mileage before changing. This was on a 1978 Dodge van with 180,000 miles. I currently use Amsoil in my 2006 Ford F350 6.0 diesel FX4 in all gear boxes, and 2012 Ford fusion. I am very satisfied with Amsoil performance.

I use Amsoil in every combustion engine that I own. Vehicle, farm equipment, lawn mowers welding machine and generator. Never had a lubrication issue with any of them. Best oil on the market hands down!

I believe in synthetics and Amsoil.

I use this product in a 3/4 ton work truck. Very high quality product.

After trying several different synthetic diesel oils over the years...I have settle on AMSOIL as the best. I see consistently better cold starts and the extended change interval is a huge plus!

I'm sold! I've used Amsoil products in all my vehicles for over 25 years. Engines run more quiet/smooth, better fuel mileage, and longer engine life. I recently convinced a friend to try Amsoil, they had an immediate 4-5 mph increase! What more can i say?!!

Really haven't noticed any real benefit over cheaper options. The cost is a major problem.

I have used amsoil in my 2008 and now my 2017 duramax. Love the reliability and superior quality of the oil.

I have found that using Aimsoil products I have added longevity and life to my vehicle. I drive around 1500-2000 miles per week. Products service my vehicles mechanical parts awesome.

I have been using Amsoil in this truck since I purchased it, it turned 210,000 miles. I have averaged 17.9 mpg over the life of the truck. It has regularly towed 17k plus. These fluids are spot on!

Used in a 2005 GMC Sierra 2500 HD, have used Amsoil products exclusively since I purchasing the truck, will definitely continue using.

I use AMSOIL in my 2007 Dodge RAM 3500, my wife's 2013 Ford Edge, 3 Waverunners, and all of my power equipment. I have not experienced any issues with any of these applications. Warranties are not voided, and fuel mileage in both vehicles is improved compared to conventional oils. My Dodge Ram has the Cummins 6.7 liter diesel with 268k miles. The truck is still purring like a kitten, and doesn't burn a lick of oil. I am still on the original transmission without any re-builds as of yet. (very uncommon for the Mopar trannies). I extend the oil change intervals to every 9k miles, even though the manual states not to extend. I have not witnessed much , if any fuel dilution in the oil. My Wife's Ford Edge has a mere 78k miles on it. I change the AMSOIL Premium oil in her car every 15k miles, even though the AMSOIL reference sheets state she could go 25k. I just like being careful. I run the marine 10W30 in the Yamaha Waverunners and have smooth acceleration, without any vibration or oil burn. Overall, I love the AMSOIL products and would recommend to anyone looking for a top end, fully synthetic, highly protective oil.

My Diesel runs smoother and quieter

I never knew you could see the difference in oil. I switched to amsoil a few months ago. I noticed easier starting in sub zero weather, and a slight increase in fuel mileage. I was running a synthetic before. Amazing.

I became aware of And oil in 1985. I knew how good synthetic oil was as my older brother was a petroleum engineer and he declared that synthetic oil would soon be the dominant motor oil. I had my brother run some tests on a quart of And oil and he reported that the stuff was off the charts. He and I became long time customers. I have never had any type of engine failure due to poor oil performance.

Installed AMSOIL in my old Chev Diesel. Changed the filter every 5000 miles . Checked quality of oil each time. At 20000 miles the oil was still good. Amen. This was at 100000 miles and used a quart every 3000 miles .mwhrn traded atb441000 miles it used only 1/2 guard in 10000 miles . Had an old 99 suburban diesel bought used. Was up to 1 quart every 4500 miles when traded at 352000 miles.

I am having regular oil analysis with each 10K mile change. Engine metals are lower than average for the V-M 3. 0. I couldn't be happier with this signature Amsoil product!