[chuckcobra]

I'm loosing lube out of the differential breather on my coupe replica. After a 30 mile drive, there is a good size puddle on the ground and the rear of the frame is nicely coated with diff lube.

The diff is a Kirkham unit and it is not overfilled. I'm running the correct diff lube. The unit has about 200 miles on it and does not appear to be running hot or having any mechanical or internal problems.

I've tried several approaches to stop the problem with no success. (1) extended the breather to a high spot (several inches above the top of the differential) with hose and (2) used a cap with two 1/16" dia holes at a 90 degree angle to the tube centerline.

This can't be rocket science and I am hoping that I am just overlooking something obvious.

Any ideas?

Chuck