very slight leak/drip - engine always dirty

[cyberpine]

87 C10 305.

I have the slightest oil leak. I cleaned the engine area, oil and transmission pans about 6 months ago - and would never notice anything on the drive way so figure all the grime I pulled off was from 20 years of use. But now 6 months later it's pretty greasy and dirty again. Both pans seem to have a drip building up.

We now have an expensive brick driveway and my wife noticed the slightest stains where I park the truck - mind you it's not a daily driver.

Under the truck I do see some build up around the flywheel. Run my finger around that seal do think it's leaking at least from there.

How much can I expect to pay to fix a leak like this?

While on the subject - I'd love a clean engine with no leaks, but have noticed that most guys old chevy trucks seem to leak something around here, and when I see pictures of other guys trucks there is always some kind of greasy buildup under the truck everywhere unless it's a show truck.
How many of you would just live with this?.. after all, it's only $10 for a nice rubber mat. If the engine and tranny are solid, what's the most common, complicated and expensive leak issue I could have with the early 80s c10?



before I cleaned up the engine over 6 months ago.. it was caked on in places: