I seem to remember the recipe for moly grease was one drop of oil to a small amount of moly grease, just enough to thin it out a bit. Whatever it was, I never use moly anymore and just use a light coating of a thin light grease. My daily driver now is the green Lucas Xtra Heavy Duty Wheel Bearing Grease which is thin and has no fibres in it to get hard when the weather is cold. It seems to work OK.
You have to remember that these bearing surfaces are in the ground path for the spark plugs so cleaning any tarnish off with fine grit paper first will help the electrons flow. What you don’t want to use is a dielectric (non conducting) grease of any kind as it will act as an insulator.
