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crsgmc · 12-05-2018, 05:27 PM

Thanks for the responses that were posted. I always appreciate when people post final results on what fixed the problem. In my case I guess it was nothing. I drove the truck for another 30 miles or so and then cleaned off the bottom of the differential real good. Just drove the truck about 20 miles and there was not a single drop of oil on the differential. I am not sure but maybe because it was cold when installed, it took the seal a few miles to mold itself to the yoke shaft. So if someone does a pinon seal replacement and it leaks for the first 10 to 20 miles don't panic. If it is still leaking after 50 miles you probably have a problem that is not going to go away.

12-05-2018, 05:27 PM	#5
crsgmc Registered User Join Date: Apr 2018 Location: Carpenter, Wyoming Posts: 83	Re: Leaking Pinon Seal Thanks for the responses that were posted. I always appreciate when people post final results on what fixed the problem. In my case I guess it was nothing. I drove the truck for another 30 miles or so and then cleaned off the bottom of the differential real good. Just drove the truck about 20 miles and there was not a single drop of oil on the differential. I am not sure but maybe because it was cold when installed, it took the seal a few miles to mold itself to the yoke shaft. So if someone does a pinon seal replacement and it leaks for the first 10 to 20 miles don't panic. If it is still leaking after 50 miles you probably have a problem that is not going to go away.