Great product. My husband has 2017 Peterbuilt and this is the only oil he will use. Great product, great price!

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.

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

Love the product but the delivery was horrible! Items were left in clear view of the street to where someone could have easily come and stolen my order. I didnt receive notification that my order was delivered until several hours had passed.

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.

I wonder why they call this synthetic oil when they have another labeled bottle marked full synthetic and it cost more, this bottle does not show it being synthetic oil, I still use it but would like to know the answer to this.

[This review was collected as part of a promotion.] The reason is because the product came in excellent condition and price was the best on the online marketplace.

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

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