I really like purchasing the oil and doing the oil change on my 2500 Heavy Duty truck. I can do this myself and save over $100.00 on having a Dealership change it.

It's oil for an engine, what else is there to review. it performs as expected. gets dirty as expected, must be changed at interval as expected. If engine had grenaded, that would have not been as expected.

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.

i got a case 580 sm and if you know diesel tractors their oil can become sooted and darker that a night sky with no stars or moon. i like to keep it changed and this foots the bill.

since all oil at Walmart is good quality and just about all oils have to meet a certain standard you really can't go wrong just by what's best on price and go with that and this oil works for me though it does have a little bit of a smell

[This review was collected as part of a promotion.] Tried and true product. I usually purchase in bulk. However the oil price is too high to purchase bulk quantities.

Have used this item exclusively for over 20 years on my Diesel engines Have over a million miles on several trucks Delvac is the best for long engine life

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.

[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.

Switched to this from Rotella T-5 truck runs just as good with this oil. I change the oil in my duramax every 5k miles which could get costly, this oil keeps operating costs down and makes changing more frequent easy on the wallet. A+