I got a leak that is getting worse. I think it is the rear diff main seal. I did the intake manifold a few months back. Felt back of intake no oil so it's coming from somewhere else. It is dripping from rear diff torsion bolt that is closest to front right under main seal. No oil in front of car at all. It drips more when I rev the car. I can rev it not even in gear and it drips. Like I said no oil in back of intake at all. Smells bad like gear oil. Is there any other places I should be checking?

 

It is 95 z28 six speed.

 

Typically a pinion seal leak will spray a stripe of gear oil over the bottom of the car.