Most proably its the crankshaft seal in the timing cover ....pull serp belt and harmonic balancer and pry old seal out and tap in new one ....should use a seal installer but can be done with a hammer but just be careful not to eggshape seal when installing.
bg, October 2005
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I can answer this question...
how to stop oil leak on 93 grand am 2.3 singale oer head cam ?