showcrop
Well-known Member
My '06 6.0 has recently developed a coolant leak. It doesn't appear to leak while running, it doesn't leak while it is cooling down or right after shutting off, like you would expect. I can't see any place that is leaking, except that from the little puddle it is on the right side just behind the radiator. It appears to leak approx 4 oz. and it does not have to het even to operating temp to do it. It leaked a day or two ago, the day after having sat idling for maybe 6-8 minutes, then parked back inside. It doesn't leak while running or just after running, not until 12 hours later. The reservoir has lost about an inch of coolant.