My 1987 300E spark ignition with 177,900 miles and going strong.
I've always over done the oil changes etc.
But these compression ignition beasts can't be broken!
I bought mine new, but except for the tinkerring I can do to mine(mods for performance), if I could turn the calender back, mine might be going clackedy clack instead of huummm.
Happy Trails Beep Beep from Houston!!!
Donald, El Cheapo