Rheostat

"Just turn up your internal rheostat, that should keep your lube loose."

- Han Solo

A rheostat was an internal device on droids that apparently conducted heat. When C-3PO and R2-D2 were scouting the ice planet of Hoth, Han Solo suggested that they turn up their rheostats to keep from freezing solid.

Appearances

 * Star Wars 3-D 2: Havoc on Hoth