With RC Helicopters, people I've talked to recommended silicone lubricant.
Is this ok?
I've also used a product by "Finish Line" which is used for bike chains. It
is called Kry-Tech. Essentially it is paraffin wax in a solvent. One would
think this would be great for lubricating Lego gears, though I have not
tried it myself.
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here.
All logos and trade names are the property of their respective owners.