Originally Posted by mclasser
Run the engine @2500 RPM for 2 cooling fan cycles, heater on max hot, blower off, done.
I posted this as part of my question about coolant changes, but wondering why some sites say to have blower on and others say blower off. Assuming engine block drains aren't opened, I suspect with blower on, the heat is dissipated through the heater core longer thereby delaying opening of thermostat for additional cooling through the radiator. The end result, is that the burping process takes longer. Either way,the engine will be burped of air but with blower on it just may take longer. Am I correct?