Depends on where it is leaking.
it depends on where its coming from
oil leaking on the ex man fold need to fix the oil leaks
If the oil sending unit is leaking oil by the inside of the component, then I don't know of any way to fix that other than removal and replace with another one. If it is leaking by the threads, then you can try teflon tape to seal that. Also make sure it is leaking from the sending unit and not leaking down from the valve cover.
antifreeze leaking into the oil pan
tape
the only true way repair the leaking oil pan it to remove the pan and change the gasket their is no quick fix for a leaking oil pan if you do it right the first time it wont bie you in the but latter
The repair depends on where it is leaking oil. As you didn't list the location it is impossible to give an answer.The repair depends on where it is leaking oil. As you didn't list the location it is impossible to give an answer.
replace the housing o ring
First you need to diagnose the source of the leak then we can help you fix it.
you don't most manufacturers are from china with no parts available
possible valve cover leaking. The header would burn off the oil dripping right away and make you think it is leaking below the header But if it is leaking below the header as you stated it is probably coming from the manual fuel pump gasket or the pump itself or the cover plate if its been removed and replaced with electric.