I have just finished reglazing one of my double-hung windows with new
thermopane glass, refinished the wood frame and am now ready to
reinstall in the aluminum track. I am thinking WD-40 is not the best
choice for a lubricant; a spray-on teflon might be better. Anyone
have first-hand experience with teflon spray? Any particular brand
names to look for?

TIA for any advice.