As you know, Ol' Roy has been overheating severely and rapidly. Temps went easily up to 120+ and boiled out the coolant. This would occur while idling in the driveway relatively quickly.
A fluid test on the radiator was somewhat ambiguous but indicated that there may be a small leak in the head gasket allowing exhaust into the water jacket.
Anyway, today I started it up and let it idle for well over thirty minutes. The Temp never even hinted that it would rise above 180. I decided to run some errands and put about 20 miles on the truck on local streets and interstate. Not once did it creep above 180. In fact it was even at 179 a few times.
Since I planned on pulling the head, etc, I never refilled it with ethylene glycol, just plain water. (just a refresher - new pump, T stat, radiator cap, boiled out radiator)
In the immortal words of Slim Pickins, "What in the Wide Wide World of Sports is a goin' on here?"
