I live off grid in Florida so I need a heavy oil to run my generator during the heat of the day.Mobile Delvac 15/40 has proven to best the best and the price is right.

Even though prices are steadily on the rise ,Walmart has some of the great low prices , automotive , diesel trucks ect ,I will go there first before I go to the corner part store because more than likely Walmart or Walmart. Com will have it.

[This review was collected as part of a promotion.] Used the product for many years with good results. Walmart has the best price and availability of any merchandizer.

Mobile Devac 1300 15w-40 1 Gal is awesome oil for many diesel motor application. Run this is larger Mack trucks to International Semi trucks. Also in F350. Used for decades.

put this in my 6.4 powerstroke and change every 8k seems to be working great for me so far. I have used this 3 times already I don't know how they can sell it so cheap but I like this product best for the price if you ask me

[This review was collected as part of a promotion.] I like delvac 15/40 oil for my diesel motor home and my duramax Chevy truck, Same price as Lowe’s so I ordered it, did not have to pick it up.

[This review was collected as part of a promotion.] I love the fact that I don't have to go to the store to pick this item up. It was already packaged as 4 per box, and it was also on sale. It makes my life much easier.

Non synthetic oil is getting harder to find as newer diesel engines require synthetic oil. As an older diesel truck owner, a synthetic blend oil is the next best thing.

Good value

great value