Customer Ratings & Reviews

Best oil I have ever had!

I have been using this oil in my long distance trucks for years. Cummins and Caterpillars Oil performance is what i hold in high regard and this has never disappointed me.

Only use amsoil I. My cars and truck. Won’t allow anything else in my motors

Awesome oil for my lb7 Duramax it has 306,221 miles on it and still running like new, iv never had any issues with Amsoil, I highly recommend it for any Duramax

I've been using Amsoil Signature 5W-40 Diesel Oil in my 2015 Ram 1500 EcoDiesel since it was almost new. I'm confident that using this oil has helped keep my rig going strong without issue for the 240,000km's that are on it so far.

Excellent service and delivery

After 25,000 miles oil was dirty but not sooty. It did not thicken up the viscosity of the oil.

All I using my Duramax

Amsoil is the best. I really feel that this oil has my back when I put my foot to the floor. The delivery service is excellent.

Learned about Amsoil by watching Greg A. On YouTube. Tried it in my 12 Ram 2500 (Cummins) and used it on both my 21’ 3500, and now my current 14’ 2500. Soon I will be ordering it for my 01’ 2500 (Cummins) I definitely noticed a difference in engine chatter(noise) after doing an oil change with Amsoil. Ram quieter and smoother. I won’t run any other oil. Thank your for the great product!

Amazing for my 2015 ram 1500 ecodiesel

Best product in the market, use it on all my motorized equipment, from my vehicle to chainsaw

This oil was sent to two friends in Zambia, Africa to use in their Toyota Hilux pickups. It will not get there until July 2023. They have used it before and really like it.

I’ve noticed a big difference in engine noise after using Amsoil 15W-40 Diesel motor oil. The engine runs a lot quieter on Amsoil than the Shell Rotella T6 that I was using.

Never disappoints. Stellar oil analysis results, even on extended miles. The engine barely wears anymore.

Great products

Can’t say enough about this stuff! I’ve been using this diesel oil for years and I love it. I put Amsoil in all of my vehicles even the dirt bikes and the side-by-side! Everything! It is second none and if you want longevity out of your vehicles it’s a no-brainer

I have been an avid supporter of AMZOIL for over 20 years. The only lubricant company I will use in my spouses’ Lexus ,and my 6th Ram truck. I use my truck daily towing an average 8k lbs business trailer 99% of its 109,000 mile life so far. ALL fluid changes ie; gear ,transfer case , transmission, engine, cooling is AMZOIL. THIS VEHICLE LIVES SEVERE DUTY! I am also a preferred customer, the extra nominal cost is well spent money. As far as delivery time, I make my order on Monday and usually receive Wednesday. Customer support, top notch! I refuse to use any other synthetic product company, Mobile1 does not hold a flame near AMZOIL!

It's something about using AMSOil that makes you excited to change your oil. Been using it in all my vehicles, dirt bikes, mowers, and tractor for years. Not going to say anything about it keeping my stuff running well in case something breaks tomorrow, but...

I trust Amsoil products in all my vehicles and they have never let me down. They cost more but they’re worth it. Also their customer service is outstanding!