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post #5 of (permalink) Old 12-24-2015 Thread Starter
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Joined: Feb 2015
Location: NE ohio
Posts: 251
Originally Posted by 740weapon View Post
that vent is a one-way valve for gases to escape the differential. when the differential is cold, the gas inside contracts creating a suction, when you take off the vent, you hear air rushing INTO the differential.

ahhhh hhha, interesting, I will have to run the expansion tank for awhile and see if it cleans things up, if not I will have to look at replacing the pinion seal - don't really want to do that

Thanks for the education

2013 gt premium m6 3.73 with lots of aftermarket bits

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