How many petcocks in a block?

Originally Posted by FEandGoingBroke

Heater core can handle more pressure than the radiator. But if it's as old as the car, ...

I have a common garden hose here that is same size as the two connections for the heater core. I remove them both, then connect in hose and watch the silicone gasket chunks come out. Reverse connections a few times and watch the chips fly.

Humm... does passenger floor look wet now and smell differently too? Another ting I wasn't planning on fixing right now.

Usually do the flushing in November as will need heater in December around here.

Wm.