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Dawgz · 08-05-2021, 07:59 PM

Kind of confused on the bleeding/venting procedure.

Do we leave the expansion tank open or no? ISTA warns to keep it closed but then says to watch the level and then even says at the end to close the expansion tank.

Kind of contradicting???

08-05-2021, 07:59 PM	#7
Dawgz 2022 M4 Comp Xdrive 1019 Rep 1,538 Posts Drives: 2022 M4 Comp Xdrive Join Date: Feb 2019 Location: USA iTrader: (0)	Kind of confused on the bleeding/venting procedure. Do we leave the expansion tank open or no? ISTA warns to keep it closed but then says to watch the level and then even says at the end to close the expansion tank. Kind of contradicting??? Attached Images
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