Whos "they" ?![]()
Oh yeah, the original question. Rain-X has worked very well on my windshield.
Besides, the excellent suggestion to put Rain-X onto a rag in order to apply to the windshield without excess running down into the channel where it can attack the adhesive; I was wondering if you would want to try putting a small fillet of clear silicone along the edge of the windshield frame to seal the windshield to the frame.
No one knows! The original mysterious "deep state", maybe!!