I would like to hear people opinions about 2 different ways to winterize the engine cooling system with red pop.
I am using the -50f stuff in the engine and the engines are open raw water cooled.
The first way is the traditional way of letting the thermostat open while running the engine then letting the water pump suck in the red pop and letting the stuff sit in the engine block for the winter.
The second way is doing the same thing except after the engine is shut off I open would open the petcocks and let the stuff drain out so the cooling passages are empty.
The reason behind this is IF the red pop was diluted and had a slush point higher than 10F there would be room for the slush to expand and not damage anything. I realize that NOT having the red pop in there does nothing to protect the metal. Also, the way I am getting the red pop into the motor is I am using the winterizer jug from Camco