Mobil Delvac 1300 Super Heavy Duty Synthetic Blend Diesel Engine Oil 15W-40, 1 Gallon (Pack of 4)

from gina

i have big trucks pulling mobile homes have for 28years we alwaysed use Delco but the price went up so we have been using this for about 2years older truck unbelievable mileage on it its a Cat engine and we feel Blessed to have been able to afford even this oil , its doing and done our engine gre...

from Q See Cameras

Motorhome uses 4 1/2 gallons so this saves me a pile of money on okl changes.

from David

I have used Mobil and Chevron and Texaco brands my entire life and at the time of purchase Mobil was the cheapest Walmart had, even cheaper than the store brand, so I bought it. A few bucks less makes a bigger difference when you have to buy 4 gallons for every oil change.

from Nice

I love this oil I've used it in my gasoline trucks for a while now it works great and I've never had a problem most people think that because it says Fidel you can't use it but that's very wrong IT's never been a problem for me and I will continue to use it in any of my vehicles

from Walter

We have a fleet of six offshore charter fishing boats, all with Caterpillar diesels. This oil is recommended by the Cat dealer as the oil to use if you want to keep up with the specs in your warranty Lots of years with NO trouble. The only motor oil We use