You are right it is a breather. If the cap is loose the breather is generally not stopped up & the fact that oil comes out is another factor that it is not pluged up. Oil should not come out of it though. You may be getting it too full or it is not the proper grease & is foaming. Sometimes the cover gets put on upside down causing the fill level hole to be up way too high. The level of the grease should be about even with the lower part of the axle tubes.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum