Customer Ratings & Reviews

This 5w40 diesel oil have great protective qualities, and actually made my diesel motor quieter. Due to superior lubrication.

My 2014 Ram Eco Diesel hums with Amsoil. I have gained in gas mileage and my truck warms up quicker. Love this product - it’s worth the extra $ - invest in your vehicle.

Great Oil I would not use any other brand in my Dodge Cummins!

Great oil doesn’t break down

I’m just going to keep it simple,your not going to find nothing better then this......Amsoil #1

My son uses it in his 2004 dodge truck. Highly recamends it.

I use this in my 97 Dodge 2500 12 valve cummins, and my 2006 F450 6.0 powerstroke. I never have to add oil to either one between oil changes. No issues using this oil.

Best diesel oil on the planet period!!!

My son has run it in his dodge diesel for several years does a great job. I run a amsoil in both of our vehicles for many years won’t run anything else.

Switched to Amsoil this year. I can tell from my services the oil is a night and day difference as far as it’s clarity compared to Rotella Sythetic. Both oils ran with a 2 micron Amsoil by pass filter. I have been replacing the 2 micron filter every other oil service regardless. Just installed a BANKS wet filter CAI. Interested in seeing if there is any change to the next oil service.

Running this in my 98 Cummins 12valve using Donaldson filter and got 16,000 miles with oil still able to go a bit further. That's towing a 14,000lb 5th wheel for at least half that mileage. Also I lost less oil to evaporation from engine temps towing when I switched from Rotella T6, plus Amsoil doesnt have the french fry smell that Rotella T6 does. Only negative is initial cost, but its more than made up for in time between oil changes.

I have used this oil in all my diesel engines. Including Deere tractors, and duramax pickups. Zero problems in my almost 15 year old engines.

This 17 lb jug is really handy, however a pour spout with flexible neck like the one used for DEF Fluid would seal the deal on this all in one 10 qt jug.

Amsoil is the best oil you can get there’s nothing better. If you want your vehicle to last get Amsoil and don’t look back.

tractor runs quieter with this oil

Best oil you can buy.