8 3/4” axle leak

I have a leak on the top of the housing somewhere... It only leaks when I am driving and it runs down the back of the housing....cant find it for the life of me. I will have to pull the housing and strip it down this winter.


Check around the vent. Gear oil was blowing out of mine just a little while driving. replaced it with a new one and no more leak.
Here's one at year one:. Mopar Dodge 4032798 Rear Axle Vent1966-74 A B E-Body