99 mustang 3.8 v6
How is the engine running? About all that it could be is leaking fuel injectors.
If it is not hard starting, and the check engine light is not on, it may be to just change out the pcv valve and crank case breather element if so equipped. Can you tell there is gas in the oil when you look at it on the dip stick?
Looking for a Used Mustang in your area?
CarGurus has 38,333 nationwide Mustang listings starting at $895.
Search Ford Mustang Questions
Ford Mustang Experts