@packbat for lubricating oils, silicone oil and lithium grease are two of the best for general-purpose long-term use. neither significantly degrades or evaporates over time, and they're both compatible with most plastics (this is something to keep in mind: plenty of lubricants can dissolve plastics)
-F
@Felthry
Please be careful with lithium grease and potential skin contact. There are many white greases that are free of lithium soaps.
@packbat