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Topic: Rear differential drain plug has a drip (Read 768 times) previous topic - next topic

Re: Rear differential drain plug has a drip

Reply #20 –
Quote from: craneman –
Have never needed sealer on any of my truck or crane differentials and they don't leak. When you tighten it up the thread contact area stops the leaks. Same with car differentials I have owned.
It's more a matter of the high pressure additives* in differential oil.  The spiral paths are always present except in the case of the dryseal tapered pipe thread standard.  And that one is not reusable.

* In the good old days that would have been lead oxides.