</font><font color="blue" class="small">( Maybe if you park it with the front end downhill the air will go back out where it came in )</font>
Since we are talking about a sealed front axle/ final drive unit.. the air got in where the oil got in.. and as far as i know.. there is no vent... That was the point of the message.... no vent = pressure buildup due to air temp and atmospheric pressure changes..
Soundguy