Ed, feel free to move this to the OT board if you wish.

I have a '89 chevy 1500 4x4 with 350 5-speed with 250k on the clock that is loosing lots of oil after driving. It's running down all over the starter and transmission, making quite a mess.

Thought it was likely a bad valve cover gasket, so I replaced them yesterday. Leak is still there. Can't tell exactly where it's coming from, but it appears to be near rear of engine. Rear main was replaced when we did the clutch a couple of years ago. Just curious if any of the mechanics that frequent have seen this and if doing the rear intake seal (without pulling the engine) is a DIY or not.

Thanks,
Mitch