Rotary switch contact lubrication

[wristpin]

One of the multi layer rotary function selector switches on my small engine ignition tester is getting a bit graunchy. What should I lubricate it with ? The net seems to suggest either Electrolube or silicon grease.
Suggestions please.

 

[brightspark]

either will be ok

 

[Hopefuldave]

NEVER silicone where you are breaking a current, wrecks the contract faces.
Proper contact cleaner / lubricant is only a few Local Currency Units.

Dave H. (the other one)

 

[rtbcomp]

I would go with Electrolube contact cleaner.

 

[Wozzaaah]

The volume pot and rotary selector switches on my old HiFi amp we’re starting to get a bit scratchy so I bought some Servisol Super 10 and it worked perfectly.