As a followup to a question which I previously raiised on this and a couple other forums, I aasked my service manager about the best way to treat the upper window gasket on my Lexus 2002 LS430 which becomes rough between routine cleanups. I'd been using Z-16 for this. He recommended that I clean it until it was smooth, thrn use a silicon spray lubricant (in my garage, that's CRC). Anyone ever use it for that purpose and/or for other window or door, trunk, etc trim??? I've used it on cars as a window channel lubricant, but never as on a gaket. Will it also act as a protectant?? Comments, questions, snide remarks.