First Oil cooler/EGR cooler on a school bus

[forddieseldoctor]

I have a thermostat housing that's already gutted that I keep. And when you're into it anyway the flush procedure really don't take that long to complete. Plus once you do a couple you get the hang of it. I don't remember if it says in the directions or not, but I fill it with half capacity undiluted coolant and then top it off with water. And make damn sure it gets run enough to mix the coolant if it's anywhere near freezing.

[forddieseldoctor]

And look up the pto circuit in the body builder book. If you put power to it in park with the parking brake pedal pushed down just enough to turn the light on it will run the engine at about 1250 rpm's. But it's only on 05 and up.