OK, my car is leaving thick black oil on the garage floor. It isn't from the tranny because thats new clean gear lube. I have some minor oil drips coming off the engine, but again that's also clean, not at all like the black goo on the floor. Oil cooler leaking maybe? If so how do I get to it to check and tighten mounting screws or whatever? Thanks.

oil collects dirt by nature. Heck that's what it is designed to do.
Might have to crawl up under there and see where it's coming from.

Yes Oil cooler is accessable but not easily. 10mm open end wrench and a good feel. You can't see the nut at the same time you are tightening it.

If you have HE's they can harbour and cook oil. The goo that is left can find its way

to the ground, almost looks like tar.

get her up in the air, and go over the whole thing with lots of rags and some cleaner...

Make sure to clean off the top of the HE cause they can hold wuite a bit.

Then run it, dont drive it...
You should be able to see the basic location of where it is coming from.

The big culprits.
Valve cover gasket
Push rod tube seals
Oil cooler
Oil pump
F/R main seals.

And lastly, oil galley plugs can seep.

Rich

CV joint grease from a torn boot?

Thanks everybody! About the only thing I know for sure about this is the CV boots are good. I guess i'll have to put in the air and get all oily.