New chain and sprocket?

[fazersharp]

aerosol lube that turns to a sticky paste.  Yes the stuff sticks, yes it lubs but it's also a magnet for grit, and grit added to paste turns into grinding paste.  They're dry lubs, these are silicon mixes, some are good others crap, for good ones, they're expensive, need applying every few hundred miles, they're better than sticky non fling aerosols, but need applying more often and for good one's bloody expensive. If expense is not an issue and you like a spotless bike, ride only high days, holidays in the dry, these are the way to go.   

This is me.Which are the good expensive ones you speak of.18 years dry miles only had tight spots at 22k but sprockets were ok. But changed them anyway.