leaking axle bearings
I recently replaced both axle bearings on my '64 Impala (300hp 327). The passenger side was leaking so I replaced both the passenger side and driver side bearings since both were original with about 50,000 miles. A few hundred miles later the passenger side started leaking gear lube and shortly afterwards so did the drivers side although not as severly. These are $160 National bearings, not cheapies. They appeared the same as the original bearings and were installed the same. I can't imagine getting two 'bad' bearings although anything is possible. Neither of them make any noise or vibration and both turn as smoothly as a new bearing should.
Has anyone experienced this or have any ideas? I would appreciate any input.