Mobil Delvac 1300 Super Heavy Duty Premium Synthetic Blend Diesel Engine Oil 15W-40, 1 Quart

from A model

I have been using Delvac oil for years in my antique car. Took off the oil pan after 90000 miles and the engine was as clean as when I installed it. Thank you Delvac

from

Mobile 1300 is awesome. I youse it in my duramax and 2 old corvettes. It protects the flat tappet cams in older equipment. Thanks for making such a good product at a great price.

from Framer Dave

I have been using this oil for years in my trucks and my farm tractors. I had to put new injectors in my 2001 truck and the inside looked brand new. No oil build up. CLEAN! You won't go wrong with this oil. Mobil Delvac 15W-40

from Justin G

I've been running Delvac 1300 Super 15W-40 in my 2017 GMC 2500 Duramax since it was new. Truck runs just like it did on day one. The truck has never been in the shop for anything engine related. Very pleased with how Delvac 1300 Super performs.

from Atolabor1

Being a Dodge Mechanic. I use only Mobil 1. In everything not just motor oil everything .I never ever had a problem with this motor oil in all my years as a line Mechanic. This is a generation talking.