Drivetrain 101

68RFE Service & Maintenance Guide: Fluid, Filters, Capacity, Deep Pans & Cooling Proper maintenance is one of the easiest and least expensive ways to extend the life of a 68RFE transmission. Whether your Ram 2500 or Ram 3500 is completely stock, regularly tows a fifth wheel, runs oversized tires, or...

68RFE Upgrades: The Complete Performance, Towing & Reliability Guide The 68RFE can be dramatically improved with the right upgrades. Whether you own a stock 6.7L Cummins daily driver, tow a heavy fifth wheel, run 35- or 37-inch tires, have added engine tuning, or are building a 700+ horsepower truck, the...

How Much Power Can a 68RFE Handle? 500HP, 600HP & 700+HP Performance & Tuning Upgrade Guide The 68RFE transmission can handle considerably more power than stock when it is upgraded correctly, but horsepower alone doesn't determine whether a transmission will survive. For a 6.7L Cummins, torque, vehicle weight, towing load,...

68RFE Towing Guide: Tow/Haul Mode, Temperatures, Overdrive, Tire Size & Reliability The 68RFE transmission can be a good towing transmission when it is healthy, properly maintained, correctly operated, and matched to the truck's rated towing capacity. However, towing places substantially more demand on the 68RFE's torque converter, valve body, hydraulic...