Head bolt from hell...

[Hubjeep]

BINGO!

When I suggested massaging the firewall, I was flamed for butchering trucks. One of the first things I noticed when I went to work for a dealer was the techs would routinely massage the bulkhead for access to that bolt:rofl:

Worked great! Thanks!

 

[alex]

what does that do? Does it help the socket "grip" better?

yes, prevents it from slipping.

works really well on screwdriver and hex head sockets. a bit of valve grinding compound on those, and they will grip the fastener so well, you'd swear the tool was magnetized.