like wt said..... i bet u that if it is engine oil its commin from your valve cover... just replace the gasket... dont be like the idiot i bought my truck from and just use rtv or whatever and apply it to 20 year old gaskets and expect it to hold up for that long.... there only like 15 bux!! i had the same prob with my truck...... oil allover... inside the bellhousing ect... good luck!!