I pulled the rear end plug on my daughters new GT to clean the mag plug and as the plug got loose, air came rushing out like the rear end was holding air pressure. It has 1800 miles on it and the mag plug was in fact covered in fine metal goo which was expected. The car had sat for 18 hours so the rear end was stone cold. I have done this for years on many different cars, but never have I heard air come rushing out. Anyone else notice this? I wonder how much the pressure gets to when hot? I see the vent on top of the axle, but wonder if it's working.
Thanks, Bill
Thanks, Bill