Thanks for the reply Adam. First, I know the breather tube is clear. I removed it and cleaned it out when the dealer told me the pinion seal was bad. After finding the oil was running down the firewall I discovered it was coming out the tube. At that time the diff was over filled since I now have the pinion sitting about level I don't need to fill it with as much oil to be sure the pinion is receiving proper lubrication. That was my fault, but you'd think the dealer could have found that out.

The leak didn't appear until I had the driverside jacked up to remove the wheel to paint it. It sat on the jack for about an hour, so maybe that is why the oil has ran into the axle tube. At least that is what I'd like to think. As I said it WAS leaving a spot of oil on the ground, but now it is not and the knuckle is only slightly "wet" with oil sometimes. You're probably right, maybe I should just leave it alone.

I cannot say for sure if they replaced the seals this last time, my guess would be they did not. For now I guess I'll just keep an eye on the knuckle, and check the diff frequently to make sure it has the correct level of oil in it. I might even go back to the factory cover since the hole is at the correct level for the required 1.5 quarts of lube. If I do that I'll have to get a "bolt on" diff guard.

-- Edited by firehawk at 14:59, 2008-09-07