Originally Posted by
FBinNY
These types of brakes and all coaster and internal expanding drum brakes operate at fairly high temps. What's needed is a grease rated for those temps, which will maintain both film strength and viscosity when hot. The viscosity issue is probably more important in drum brakes because if the grease melts and migrates out to the drum, you'll lose braking effectiveness.
Many automotive front wheel bearing greases made for disc brake wheels will do, but you have to read the fine print and make sure it has a decently high temperature rating.
Thank you. My knowledge of car mechanics is nonexistent, so if you could provide a brand and type of such grease I could look up online, I would be thankful. Not so I can buy exactly that brand and type, but to learn about the category in general. Then I'll find something of that kind here in Helsinki.
I have some lithium grease, maybe that's similar to what you're proposing?