I have used Delvac exclusively in my DD15 for its entire life. 888,000 miles and counting. With NO rebuild! Changed at 25k give or take with 1 gallon of Lucas also included. Never had a bad oil sample report.

Very good oil. Have been using for quite some time with good results.

I own a mobile diesel repair shop and this is buy far the best oil for the money i cant touch oil of this quality for cheaper then this

Very competitive price excellent oil

20k oil change intervals. works great.

Great product and have using this for all my vehicles

I use about 2 gallons per month on our genset This oil is of good quality and very affordable

Great price on bulk oil for my Chevy diesel truck. It’s always fun to shop At my local Sam’s Club.

This oil works great in my Dodge Ram Diesel. Have been using it for oil changes for 5 years

I use this on wet clutch applications and have been for many years without a single problem.