We use Mobile Delvac at home and work with many of our larger pieces of mobile equipment having over 20k hours on them. Without oil related issues.

I've switched all of my farm equipment to Mobil Delvac diesel engine oil. It has reduced oil consumption in our older models. Great product.

3 vehicles, 2 tractors,and 1 backhoe. We have used this product for years in all of our equipment and have never been disappointed.

Been using this for 20 years and close to 200K miles when adjusting the valves all under the cover is clean.

Mobil Delvac is a quality oil that I can depend on for my diesel equipment. It is a trusted brand and a great value.

Have been using it for many many years. Over 200K on my 35 year old class A motorhome with zero lubrication/engine issues

I have bought and used this product per recommendation from a family member whom has used for years in his small business fleet. Been great so far and will continue to use for life of my diesel

I use this for my farm equipment, everything from large 4WD tractors to old gas tractors to lawnmowers. Excellent product at a very competitive price.

My Durmax was not holding oil pressure. I switched to Delvac. Problem solved.

It would be great if the rebate ever shows up, good oil