Delo is a good and common oil for many with the Cummins. Since I've owned my truck from new, I've tried many different types for at least three oil changes minimum and sent in oil samples every time for my personal documentation and tracking. I found that I get better readings from a full sync oil and found the four oils that gave me the best results. Now I'm trying extended length oil changes and using the full sync oils from my test period.
I have a friend that runs rigs and runs up mileage like no other I know. He just traded in his old rig (1.6 million on the clock) for a new one and if it works out right, when the next one is due, he'll be retiring. He test his oil changes like I said above and changes brands over time during this period. But with the mileage he does per year, he can do many oil changes in a short period of time. With 250k on the rig now, he found he gets the best readings from Rotella T6, so he will be staying with that until he gets rid of the truck. The prior truck, he found he did better with a different brand.
Seems with what designed demands with the truck, the way the owner drives and makes demands from it, and the complex material and nature of engines, the environment, changing fuels and such, one engine can run better with one brand oil and the same brand truck/engine can run better with another oil. So it seems there's more to it than just price, preferred company product, referred recommendation and availability. We just have to be careful was to what we select, because we are the ones who will pay the cost if selecting wrong, no one else will.
I have a friend that runs rigs and runs up mileage like no other I know. He just traded in his old rig (1.6 million on the clock) for a new one and if it works out right, when the next one is due, he'll be retiring. He test his oil changes like I said above and changes brands over time during this period. But with the mileage he does per year, he can do many oil changes in a short period of time. With 250k on the rig now, he found he gets the best readings from Rotella T6, so he will be staying with that until he gets rid of the truck. The prior truck, he found he did better with a different brand.
Seems with what designed demands with the truck, the way the owner drives and makes demands from it, and the complex material and nature of engines, the environment, changing fuels and such, one engine can run better with one brand oil and the same brand truck/engine can run better with another oil. So it seems there's more to it than just price, preferred company product, referred recommendation and availability. We just have to be careful was to what we select, because we are the ones who will pay the cost if selecting wrong, no one else will.