2016-09-16 Various Oil Leaks

Can this plug be removed without bad things happening internally?

Close up pix.

After approx 15 minutes of running.

I have a solution for the alternator. New grommet and gasket. Not yet installed. 

Main oil plug. Perhaps source a new o-rings?

Bonus shot of sparking plugs.

Valve cover leak. New gasket here and will install after doing a cam timing check.

I had wiped it down before taking pix, but this rubber cap is leaking too.

Just more to look after..