Choupique
Senior Member
Don't use additives in the fuel for your cummins. Buy good diesel fuel and be very diligent about fuel filter changes. Use OEM filters only (especially important with the front filter), change at the recommended intervals, keep the water out.
The vast majority of additives out there are snake oil. Highway ULSD has rigid lubricity specs and will work just fine for your engine till the truck rots to the ground around it.
Most importantly, drive it!
The vast majority of additives out there are snake oil. Highway ULSD has rigid lubricity specs and will work just fine for your engine till the truck rots to the ground around it.
Most importantly, drive it!