The product itself is good, the packaging was horrible. A very flimsy box and barely enough tape to keep it together.

the online system,inventory control, incorrect information and poor functionality was designed by amatures.

Have used this oil for 20 years in all 4cycle engines from lawnmower, snow blower, diesel and gas vehicles. Car, Toyota diesel, would go 5000 miles without adding any oil between changes until finally sold at 335,000 miles.

Unbeatable value. This truly is a great oil. I actually prefer Rotella T4 over this, but for $3 less per gallon, I'll switch. The farmers and truckers I've known typically run either one of these. Delvac runs clean, and does it's job. It is my un-scientific opinion that Delvac 15-40 is thinner than T4 15-40 at lower temps. That is based off of my motor's behavior. I change out at 3-5000miles, and Delvac feels like it could easily make it another 3k. It definitely holds its own.

I am on a tight budget but I wanted oil that was "good" for my diesel. I chose this product based on name and price. The surprise is that I was using a much higher priced oil that did not deliver the power that this oil does. Nice sideline benefit! www.heatingandairfilters.com

I am an advid shopper and also a truck driver, I should have known to check the all mighty Walmart for my truck supplies. I saved so much money on the same oil I get from the shop...All I can say is I should have known Walmart is the place to shop for everything... Always!!!! Thank you Walmart

The last LTL trucking company I drove for used Delvac Super 1300 in their fleet of trucks, and ran each truck for over 1 million miles. I was able to look at a few motors having overhead adjustments being done, and all of the motors were incredibly clean inside. Most of my fellow Drivers there weren't gentle on the equipment, and those trucks still held up. When I bought my first Semi Truck, I decided to use Mobil Delvac 1300 Super in it. I have used oil samples done with every PM service, and my results have all come back looking great. In my opinion, Mobil Delvac 1300 is a top quality brand, and at Walmart it's slightly cheaper than the other 2 Big Name brands of 15w40. You can't beat that in my book.

I am new to diesel. My review is based on what I read and the value I got. This jug has a short spout which makes pouring from a larger jug easier, I noted the larger jug does not have the pull out neck. Further, Walmart's current price is impossible to beat. Its actually cheaper by the gallon rather than the larger 2.5gal jug. So I am going from handling a quart oil bottle to a larger jug and this design makes it a better pour and less waste. Its my understanding that mobile has the better oil in this case. My application is a old Onan military generator engine that holds 3 quarts of oil with a filter change. I will stick with it and keep a gallon or two on hand

I have used Mobil Delvac 1300 for years.. I have a Freightliner Classic XL , with the 500 Hp Detroit engine. I've got over 1,100,000 Miles on the engine and never replaced the piston liners or pistons.. I replaced the engine head at just over 1 million miles and Detroit Service, said that i should run it another 600,000 miles or so and then think about a rebuild.. I use Mobil Delvac , in every auto and lawn and garden engine that i own... Thank you..

Used for years in various motorcycles, basically if the bike says 10-40 I use this! The new friction modifiers are a big NO for wet clutch motorcycles, and the heavy duty additives like zinc are what is used in many motorcycle specific oils. Plus a gallon costs less than a quart of the MC specific stuff! I get almost 2 oil changes out of a gallon and I find myself changing it more because it costs so much less.