as some of you may know / i had some problems concerning a axel seal front drivers side. oil has been comming out of the shaft. also a banging noise in the stearing... turns out i needed a new stearing box. since i already sold one of my kidneys / i opted for a trip to the boneyard for a used box. no problem... however my mechanic is telling me that the leak is nothing major / it has something to do with a vent in the axel???? and does not need immediate concern... Am i getting sailed up the river again??? VENT????? could someone explain????