[Healeys] Temp gauge

[Len and/or Marge Hartnett]

Ira:  An off the wall suggestion:  There is a product called "Screw Grab" - 
"To aid in removing or tightening screws, as well as nuts and bolts". 
Google it.  It is a very gritty friction gel. I have used Screw Grab to 
remove badly damaged screws.  Perhaps a few drops on the nut or 
socket/wrench would provide the grip needed to dislodge that nut.

(The Other) Len
Vacaville, CA, USA
1967 AH 3000 MkIII, HBJ8L39031