I've been going over my 98' tonight and it looks like there is oil leaks on different parts. I'm trying to narrow it down from what I've been reading on this forum.

First I was going to change the O-rings in the OFA.

Then I was going to have the Valve Gasket replaced.

Should I replace those two things first? The pan gaskets and rear main seal would involve more work or should I have everything replaced all at once?

 

do it all at once is my vote

 

^ X2. they will need to replaced sooner or later anyways go ahead get it over with