I installed a mason jar as a coolant recovery container. The radiator will flow coolant into the bottle but will not recover it. I am using a 7 pound pressure cap. The mason jar has a 2 quart capacity with a vent to the atmosphere. No doubt I have done something wrong and need some advice. I used AN fittings into the original mason jar cap. The tube that connects to the radiator goes all the way to the bottom of the jar. Does the system have to be air tight to work?
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