New lawsuit against Cummins/FCA
A class action suit has been filed against FCA/Cummins over diesel engines in the 2500/3500's. TFLTruck, this link explains better Filed July 3rd. Looks like the reflash kills fuel mileage.
Forum Discussion
I changed my OEM Goodyears to Cooper Discoverer A/T3s and lost almost 1 mpg. Maybe the outside diameter played some role, but in my case, I also think the Coopers, being ATs probably have more rolling resistance.
