Blower Switch Rebuild Question

I picked up a blower switch for my 72 at a junkyard. The medium and high positions shorted out, but low wouldn't pass any current. Taking it apart (CAUTION: SPRINGS AND BALL BEARINGS!) I discovered what I took to have been grease liberally applied throughout.

I cleaned it out, because if it were grease, it had begun the process of reverting back to its natural state. It makes sense to me that the strictly mechanical ball bearing side would use a bit of regular (lithium complex) auto grease, but is that what was applied to the electrical contacts? Or a different sort of grease (a dielectric?)? Or could I lube it with a 'contact cleaner with lubricant' that I've used on audio equipment?

Chris