[Cayoterun]

Rockdriller: Your right. The guys here that ran them compared YEARS, instead of hours.
Most of them would run 24/7 around 6mo. a year, except every 2 weeks, kill them, drop the oil and filter, grease the drive shaft, check coolant, and go again. Never cool down. They sit out in the weather all year, except some guys had frame and roof/w open sides over them. Sure didn't take a new guy long to learn how to drop the drain plug, and filter can without getting too much hot oil on himself. Between changes, oil was added while running by watching a site gauge on the pan.

Another V12 I fixed up, we know was on a pump for over 20 yrs, but no way of knowing how many overhauls it had. The 478s were just as tough.