When I bought this tank and had 2 vent holes. One on the passenger side of the tank and one off of the radiator cap opening. I noticed that some tanks do not have vent on the passenger side of the tank. I connected this to the top of the radiator. I am now trying to expel a air bubble somewhere in the system. I have the holes drilled in the appropriate place on the thermostat. If an air bubble escapes through this hole I don't understand how it gets out of the system. Does the pressure open the seal of the radiator cap and escapes through the vent line. It seems like the way I have it set up that if a bubble gets into the top of the purge tank it just recirculates to the top of the radiator. Should the line going to the top of the radiator be eliminated.Thanks
