</font><blockquote><font size="1" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">quote:</font><hr /><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">Originally posted by Don West:
<strong>Vent should be OK, I've got an extended breather under the hood. I think I'll change the filter on it and try to check the line out complete. Thanks for the tip....</strong></font><hr /></blockquote><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">I had the same problem with my vent line. If you have any dips in the vent line as it runs forward, oil vapor can condense and pool in the line. Cold gear oil is thick enough to partially plug the vent line and let a bit of pressure build up, enough to force oil past the weakest seal. I had 2 axle seals and one pinion seal leak before the shop that changed mine (no longer in business) suggested I check the vent line.

Sure enough, when I tried to blow through the vent line, it took a pretty good puff of air to blow it free. I rerouted my rear line to run back and up inside the taillight housing where the filter is now. Since the vent line slopes downhill to the axle, any oil that condenses will run back into the axle.

I had no problems when I first installed the vent line (in the summer) but in the winter, it started leaking. Cold weather makes the gear oil thicker and in the exposed vent line, it doesn't warm up as you drive.