thanks for al the advice, guys.
I will pull the flywheel cover and see. I dont think its the rear main seal. the engine was just rebuilt. It may be blowing to the back as stated above. I did notice some oil coming from the lower drivers side oil lines that go into the block. It may be coming from there and blowing back to the pan. At least I hope its coming from there. Its a much easier fix than the rear main seal.
