Oil in Exhaust - Hyu Excel 1991
 

I have oil fumes coming out of the exhaust. Some time back I replaced
the rear main seal (not connected with fumes I suppose) and spent quite
a bit of money on that. My mechanic tells me its better to replace the
engine than to overhaul it (It has 97k miles on it). However, since I
have spent quite a bit of money to get the rear main seal fixed, I
would like to extend the life of this engine if possible. Can anyone
offer me tips on what could be the problem here and whether its worth
the cost?