Squeaky windows

I Have a 96 2.8 convertable and just lately the windows really squeak when the roof is up and the windows are closed, its obviously the glass on the rubber and i would like to know if there is something i can put on the rubber to stop this blasted squeaking.

i thought about vaseline but dont want greasy windows.

Any suggestions please

Thanks

Russ

give the rubbers a really good clean first, then use some silicone spray, or even regular car polish.

Brilliant sugestion

Thanks very much

Russ