Customer Ratings & Reviews

My cummins runs so much smoother

Best oil made

I trust this product compact to what we getting out there it is proven to have the correct antiwear detergents blend into the oil and you can listen to the effectiveness and quieter motor when idle and driving at your cruse speed

During 1965-1969 I was a RF-4B Phantom II pilot in the Marines. In the spring of 1966 our flight schedule was canceled. I walked down to the maintenance control desk and asked why all our Phantoms were grounded. The maintenance chief said: we are changing oil in the planes. I queried him: why all of them on one day. He replied: orders!! I asked why oil was being changed on all the rather new RF-4B Phantoms. He said that they were changing from mineral oil to synthetic oil. I, of course, had never heard of synthetic oil. It is my thought that the founder of AMSOIL, the late Mr. Amatuzio, who was a US Air Force pilot/maintenance officer at the time, realized that synthetic oil was much better than mineral oil that had a great number of additives emplaced in it. Mr. Amatuzio, I think, retired and then hired petroleum engineer and started the automotive revolution that exists today. What I don't understand, is why would a person who has a vehicle with a 5,000 to 15,000 dollar engine and transmission use anything but the best: AMSOIL! I just drained the fluids from my '06 Ford F-250 diesel: engine, transmission, transfer case, rear and front differential and replaced it all with AMSOIL products. Also, of course, I used AMSOIL advised filters for fuel, engine oil, transmission fluid, and my Sinister coolant filter as I also switched to AMSOIL premium coolant that lasts for 150,000 miles. Sometimes I read blogs where various "motor-heads" are discussing the fact that Shell, Mobil, or Chevron oil, etc., is less expensive for their diesel truck. Well, in my view the least expensive maintenance for a diesel truck is the best lubrication. AMSOIL is "IT" in my book. I've been using AMSOIL products for over 40 years and I cry all the way to the bank that I paid a little more for the most superior lubrication for my expensive '06 Ford 250SD, '04 Mercury Marauder with Vortech, '03 Ford Thunderbird, '70 Torino Type Northwest, '95 Ford Bronco, and '95 Yamaha motor scooter!

GOOD STUFF

200k on my cummins diesel with amsoil.still like new.great stuff.

Use this oil on 17 duramax works great glad i can get quality oil shipped to my door gives me peace of mind my truck has the protection it needs to do its job

Upon purchase of a new Toyota the service rep recommended Amsoil. I use Amsoil in a 2014 Tundra, a John Deere 748 Diesel, a 2017 Camry, a 2014 Outback, a 2016 Highlander, and a Honda lawnmower. Well satisfied at this time.

This diesel oil is the best stuff out there! I use everything AMSOIL!

I have an 05 6.6 duramax and like that this oil gives me more miles between oil changes.

Great stuff. I've been running this stuff for years. About 15,000 miles per change. I know several people that have ran it the full 25,000 miles.

So far so good, like to put 15w 40 synthetic on my Cummins. Lets see next oil analisis how's holding up.

I've been using Amsoil in my 04 Ram 5.9 L Cummins almost since it was new. 280,000 miles and no engine problems at all! Love it!

Solid premium product. I try to take care of my vehicles the same way I do my body. I look for the full protection of the lubrication this product provides in the rigorous operations I put my truck through, and the many miles I do. I'm happy with it.

Have used the diesel oil in my Ram from Day one. I believe it's the best on the market. I trust it.

Changed all the fluids in my 99 Superduty(220000 miles) over to Amsoil products. Truck starts easier in cold weather trans temps have dropped 10-15 degrees towing and I gained 2 MPG.

Was using Mobil Delvac 1. Would change oil at 15000 miles, changing the filter at 7500. Doing oil analysis at 15000 miles the oil was at 70%. Switching to Amsoil I change at 25000 changing the filter at 12500 the oil is just a little over 80%. Results speak for themselves.

I am using the amsoil for the last five years About 100,000 and 120,000 miles per years My semi truck and me we are happy and saving money it's amazing for the best

In my diesel trucks. Awesome oil. Lasts 25000km before I even think of changing it.

Run this oil in my 2012 Duramax. Can go a full year without oil change. Saves me money. Also use the Amsoil filter.