ZF 6 Forever
My six speed has 300,000 on it and never been worked on. The dual mass flywheel is another story. I went through many till I found a single piece at South Bend Clutch.
I just replaced my transfer case (again) and Mr Good Wrench pulled the 6 speed to look for other trouble, and with 30,000 on this new single piece flywheel the surfaces looked new. the machine grooved was still there. Gotta love it!
Mike
PS I do get leg cramps in city trafic.
2002 GMC, Pretty Dark Blue, 4x4 / 3500, ZF6, 115 gal spare tank and Rockets... (My Other One): Flying Fuel. I got three engines and a 52,000 gallon tank, how many you got?