Great product! I use it in my duramax at every oil change. Doesn't burn, engine consistently runs smooth. Price is very reasonable even for the larger quantities. Highly recommended to everyone running a diesel engine

I have used 1300 in all my vehicles right now both my vehicles have 8.1 V8 engines. One motor is new, (because I bought the truck with a bad motor) and the other motor is running strong at 300,000 miles!

I have used Mobil products exclusively in my Ford Superduty. Lubrication is the cheapest way to protect your investment. They are the only name for my vehicles.

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

I bought this because my dealer uses it and i wanted to use the same brand of oil . I wish it would be sold in Quart containers .

Works perfectly in my 6.0 Powerstroke. Never had any problems. Always have excellent performance year round!

Great stuff for my Briggs and Stratton lawn mowers and my Royal Enfield Classic 500! They run perfectly on this stuff. Thanks Delvac!

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.

Recommended oil and viscosity for my Terramite T7 hydraulics. So far its working well and the rebate price was great!

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