Quote:
Originally Posted by allan5oh
What went wrong with your detroit? My dad had around 1.5 million miles before the inframe, and the only reason that was done was because the coolant wasn't being changed regularly. Ate a hole through the liner.
Other then that it was a fantastic motor, only other problem is it started rough in winter.
Turbo after turbo after turbo after turbo, then head after head after head after head. 6 injectors twice. (didn't need them but was at shops mercy on the road).
I did drive it 1.2 million miles. Kept losing head gaskets and no one could ever figure out why, not even me. I was an ASE Master Truck Tech for years. It used oil from day one - 1 gallon every 2,000 miles from new and even after the major overhaul. It never ran well - never pulled well and never got any better than 5.6 mpg. Over those miles, I had to replace 9 turbochargers and 2 reman heads and 7 head gaskets. It lost 2 head gaskets and 2 turbos in the first 100,000 miles and Detroit would do nothing about it.
The big Cummins runs circles around the Detroit and gets 5.5 mpg doing it. I don't run 60 mph - ever, so it could be better. Most of my driving is 75 to 80 mph.