What’s the correct way to refill the coolant in a 4L after draining?
More specifically, how do you get out the air preventing the engine from taking all of its coolant with a closed thermostat? When I’ve refilled after doing something requiring drainage, my radiator will be full when the system still needs a gallon or a little more. Simply running the motor briefly doesn’t clear the airlock. I need to get it warm enough at idle to open the thermostat and then the airlock clears but also the coolant is hot enough to boil. This seems like a disaster waiting to happen as air locked parts of the block and/or head are probably overheating and I worry about warped or cracked parts.
As I’m writing this, I’m wondering if separating a hose at the thermostat housing while filling would work. I am using a non-fail safe (Mopar) thermostat with a bleed hole positioned up.
More specifically, how do you get out the air preventing the engine from taking all of its coolant with a closed thermostat? When I’ve refilled after doing something requiring drainage, my radiator will be full when the system still needs a gallon or a little more. Simply running the motor briefly doesn’t clear the airlock. I need to get it warm enough at idle to open the thermostat and then the airlock clears but also the coolant is hot enough to boil. This seems like a disaster waiting to happen as air locked parts of the block and/or head are probably overheating and I worry about warped or cracked parts.
As I’m writing this, I’m wondering if separating a hose at the thermostat housing while filling would work. I am using a non-fail safe (Mopar) thermostat with a bleed hole positioned up.