One problem related to axle shaft seal has been reported for the 1996 Oldsmobile Ciera. The most recently reported issues are listed below.
Several components have prematurely deteriorated calling into question safety of other related components. The car is 3 years and 6 months old, but has less than 29,000 miles. The problems all seem to deal with rubber (or similar material) components. The engine intake manifold is leaking. The left side axle seal and cover on the transmission is leaking. The serpentine belt was already cracking and needed to be replaced. (the serpentine belt is available for inspection, if so desired).