Never had any problems with it and i use it in all my diesels.

Love how it keeps the engine purring like a kitten

My truck runs better with Delvac than any other oil.

It's good oil that stays clean in it appearance even after 3000 miles in a diesel engine.

Mobil makes excellent lube products for my cars, pickups, marine engines and tractors.

I always use this in my trucks & machines to keep them running healthy.

Good product with a great price. I use this in our older motorhome.

Delvac oil has always been for my tractorsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Best blend of price and quality. My customers are happy

Reliable product that I've trusted many truck engines to.