I've been using synthetic disc brake grease with PTFE, graphite and molybdenum. It won't attack plastic or rubber, is very persistent throughout an incredible temperature range and resists wash out extremely well. So far it seems to be the perfect lubricant on a myriad of applications that spin, slide, rotate or move.

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)