We have a 2004 Dodge 2500 w/a HPCR fuel system 5.9L Cummins that lost the #3 cylinder @ 76000 miles. Customer ran a 50-50 gas/diesel mix for about 15 miles, unloaded, no towing, befor takeing to the dealer. Dealer found # 3 cylinder and piston scored, befor cl... Login to read more.