Is WD40 a good penetrating oil to use on a stubborn sheet metal screw
that is located inside an electric walloven ? I am wondering what the
odor will be when I eventually light this oven off once again ? Will
the WD40 eventually evaporate? I hope that it will before being
heated by the oven.

Problem is also that the screw is located at the top inside surface of
the oven; so, the WD40 is not going to be sucked upward, is it ?

I have the whole oven now out of the wall cabinet. Thinking that I
might be able to rotate the oven 180 degrees vertically, and then
squirt some WD40.

The screw is a cross-tip Phillips and somewhat stripped now, and is
one of two screws that secure the Broil element to the oven ceiling.
UGH !

All this effort to remove the broil (top) element in a (1974 era)
Whirlpool single oven and I am now at a standstill.

de ~ Vince ~
:Long Island:

..