Can someone tell me if I have to add antifreeze/water mixture to the engine prior to adding it to the resovior/radiator if I removed the water filter to do a complete drain/flush of the entire system. The filter housing has an on/off valve, I left it on when I pulled the filter to drain the case as well. I'm afraid to just fill the radiator, run the engine and add as required when the thermostat opens. Will my engine overheat due to not having any coolant in it at all or is this how you do it? Any help is greatly appreciated.
Thanks,
DuWayne