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billwot · 07-26-2016, 10:36 AM

As long as the system remained pressurized, air or moisture can not migrate into the system. Only if the system was fully discharged and no positive pressure remains in the system is there a risk of contamination.

07-26-2016, 10:36 AM	#6
billwot Senior Member Join Date: Mar 2014 Drives: '11 Cayman , '14 Camry, '11 Tacoma Location: Eastern NC Posts: 509 Thanks: 57 Thanked 396 Times in 198 Posts Mentioned: 5 Post(s) Tagged: 1 Thread(s)	As long as the system remained pressurized, air or moisture can not migrate into the system. Only if the system was fully discharged and no positive pressure remains in the system is there a risk of contamination.