The best fix for the Sport I and Centauro rear drives that leak is to let the pressure out when it's hot, then tighten it back up. The only problem is that if the seal is actually blown, you may have to replace it, then do this procedure. The earlier '97 Sports were claimed to have the wrong size nut that spins inside the pinion seal. This is not true. I've replaced those with an "updated" version and had the same problem. It wasn't until a couple years ago
that I discovered the simple "suction" fix works great. Please do not install a breather kit with a hose. It will just boil out the hose onto your tire anyway.
Sean Fader
truckasaurus@webtv.net
