What size 5th wheel can I safely tow? 99 Dodge 2500 4wd Cummins diesel 5.9. I know stopping it is the biggest problem. Considered a pac brake but mechanic said it would be hard on engine? Any opinions...
Welcome to the forum. I can't imagine an exhaust brake would have negative consequences on your engine unless maybe it has a kajillion miles on it. I have a PacBrake on my 04 5.9 and it works very nicely. Exhaust brakes are standard on 6.7 Cummins engines made after 2007. I might be wary of the transmission more so than stopping especially with an exhaust brake and properly dialed in trailer brakes. You will find many forum members here towing fivers with your approximate vintage truck.