K-Y ... I figured that I would be better off using the recommended Windex which pretty much disappears than something that would be more persistent.
Trying very hard to stay on thread

redface

, K-Y contains very little that will not dry, given time, as most of the lubrication comes from glycerine:
Chemical CAS# or ID % Water
007732-18-5 54 Glycerin
000056-81-5 30 Sorbitol
000050-70-4 10 Propylene glycol
000057-55-6 5 Hydroxyethyl cellulose
009004-62-0 - Benzoic acid
000065-85-0 - Methylparaben
000099-76-3 - Sodium hydroxide
001310-73-2 -
In fact, glycerine is very useful for these sorts of things. I have also found a thin film of glycerine works well for sealing tiny leaks in inflatable valves. Very safe with the elastomers in question. It is a favorite lubricant around chemical plants, when fitting seals that are not petroleum tolerant.
Another clue as to whether a substance leaves a residue is whether the bottle becomes messy with dried residue, as some cleaner containers do. K-Y and glycerine do not.