Quote:
Originally Posted by seanyb505
I wonder if it's to relieve pressure rather than introduce it
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Quote:
Originally Posted by broadrun96
That's what I was thinking, if they're adding they'll have to vent and balance I would guess. But also assume the guys at PM know what they need
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Good point. It is possible when they use this they connect both at the same time. A bit like the pressure relief on fuel.