The answer is basically ALWAYS no.
Lubrication and EM (in fact almost all pinball) basically is a no go And the parts that are the very rare exceptions would work fine for years in a home environment without lubrication anyway.
It just creates gunk and attracts dirt and makes things worse.
If you need lubrication to solve a mechanical problem you have to take the components apart and clean them and then you will not need lubrication again unless you spray it in there and it later siezes up (and it will).
Use google-
search here-
there are probably >40 threads asking the same thing from different perspecrives. The safe bet is NO LUBE.
If you have to ask- the answer is no- thats correct 99.9% of the time.
You can find all sorts of “solutions” and novel ideas and new approaches and operators are allowed to do whatever they need to to keep theor games earning money and know well the consequences of lubing this that or the other. So if you search- basically you will find “support” for or against lubrication of almost anything. The fact is that if you clean it really well (take it apart completely and polish all metal etc) lube will not be needed.