Search results

Like I said. I don't know squat about the military versions, but the coolant won't circulate in a civilian version of a 6.5 without the cap installed. They only circulate under pressure. I had problems with mine, overheating till the day it died.

In GM trucks, the coolant system was upgraded in 1996 to a larger water pump and dual thermostats. This set up made a difference in the pickups, and there is a kit to convert to a duramax fan and clutch, as well. The 6.5's in trucks, always ran hot. The engineers determined that the radiator had...