I currently use DeoxIT Faderlube for scratchy pots with great results but years ago I used WD 40 very often. I know it's a formula for water displacement but it also lubricates a bit and I could revive some pots and buttons with it.

Get that into a pot, and you're going to probably need to replace that pot soon after that.

It might not be the ideal solution but I don't have any broken pots due to WD 40, I don't think it is corrosive like Kontakt 60.