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emore93 · 02-08-2016, 05:42 AM

I believe that is a vent.
It prevents pressure from building up and blowing the seals out as the fluid warms up.

02-08-2016, 05:42 AM	#2
emore93 Registered User Join Date: Apr 2015 Location: Michigan Posts: 114	I believe that is a vent. It prevents pressure from building up and blowing the seals out as the fluid warms up.