I'm trying to refill the cooling system after replacing te water pump using a Vacuum Purge and Refill /tool. Since the beast did not come with any kind of instructions, to properly feed and pressureize the system, how many PSI should I set my compressor to. I have read that the compressor can be set to 80-90 PSI, but since the pressure bleeder valve in the system is designed to pop off at approximately 1 BAR, 14.7 PSI, 80-90 seems way over the top. Has anyone refilled and oressurized their own system and what pressure setting did they set their compressor to feed air into the system?