Review on LubeLocker AMC20 Differential Cover Gasket by Corey Harris

I had a leak from the AMC20 differential cover under my CJ8. I tried using LubLocker with the new diff cover to ensure success. Having a perfectly clean mating surface, I drilled holes for the cap and followed the gasket tightening pattern. It was worse than before! Thinking maybe I did something wrong, I took it off, cleaned everything and reinstalled it following the instructions. Still leaked! Now I'm going to install a $5 pad that will probably work where LubeLocker didn't. I think it's just not a good design for an AMC20 diff as the AMC20 has a step down right in the bolt holes in the cover where the stock gasket fits. The grease barrier is designed to seal on a flat surface, the design only leaves a small piece of gasket between the bolt hole and the lip, and I strongly suspect that the gasket moved just enough that the bolts are unsealed. Leaks came from the bottom 3 bolts both times. I have another oil separator for a Dana 30 front diff, I hope it works as it should.