Grease recommendations for worm gear?

[John Garza (3665)]

I started out using Radio Shack multi-purpose lube gel back in the 90's. Works well but eventually dries/dissipates after 15 years or so and must be re-applied.

I really didn't think much about the grease until...
I recently bought a 67 with a refurbished card reader. I noticed the card reader was a little quieter than the repair jobs I do. That impressed me. What didn't impress me was the number of misreads. Then I noticed a pattern - after 5 or 6 passes of the card through the reader it was suddenly reliable on every read. I suspect they used a thicker grease that made it quieter but needed a little 'warm-up' through the gears to reduce viscosity. Any ME's out there care to consider this?