Love this product

I bought 20 gallons of this oil--enough to change the oil twice in my Peterbilt with a 3406 Cat engine. Super price and free shipping. Thanks for saving me substantial dollars!

Use this oil in 400hp Cummins Diesel. This is a good oil and is slightly better than Rotella based on specifications for lower ash content and other factors. Both meet same spec. Had very good luck with this oil.

[This review was collected as part of a promotion.] We search and search and cannot beat the price and always have enough product being a farm family we need the product and can not beat walmart we do not even try to look else where as always find no product or the price is unbelievable

This motor oil is a synthetic blend. It tolerates heat longer than regular dinosaur motor oil and doesn't breakdown nearly as quickly as regular motor oil does. In other words, this oil protects my motor better than regular motor oil does and it does this for a longer period of time.

[This review was collected as part of a promotion.] I do believe Mobil has a very good product and good reputation as for as oils go. I used Mobil oil in an industrial setting at work and have had very good results with them. As far as price Walmart has the best price on oils in my area, so I buy all my oils there.

I purchased a new truck a few years ago with a cummins X-15.It started using oil,the more miles i put on it the more oil it used,So I changed to delvac.The first oil change it used 1/2the oil it was using.The second oil change it almost quit using oil. Amazing oil.would recomend.

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 greatly, God Bless you all keep those big engines running

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

The oil is a proven product. My issue is with Dams shipping. Rarely do I receive anything that is shipped to me and at least part of the order is damaged. I ordered 5 cases and 3 of the 5 bixes were soaked in oil. Finally found the one that had been mashed and wa leaking all over the other cases.