[Rich-Tripower]

Ever since we finished our 64 GTO about 8-10 years ago, we've had a hard time keeping a good pinion seal in the car. Each new one would last about 20-30 miles and then it would start leaking again. The last time we played with it I had it at a reputable shop who tried everything to diagnose the problem They even put it up in the air with the wheels raised, the car running and ran it through the gears while observing the axle and driveshaft. No problems were identified. They had a hard time locating an appropriate seal at that time so they replaced the entire yoke (A Chevy part if I remember) and found an appropriate seal for the size of the hole and the size of the pinion.

This is a BOP stock rear with 3.55 gears. It is leaking like mad again. I drove it maybe 5 miles today and the entire pumpkin is wet and dripping on the bottom and even the gas tank is covered in lube.

What can I do here? Internally is there a slinger the keeps oil mostly off the seal that perhaps could have been left out? I've replaced the seal a number of times and very reputable and experienced professionals have replaced it at least twice, and still the seals go bad in short order every time.