I'm driving my neighbors F-150 while helping him work on his house. The truck was a mess so I decided to wash it and all came clean but two spots on the window. It had the consistency of hard maple candy, nothing I tried would remove it. Dawn, orange cleaner, zaino window polish, and finally barkeepers friend were used with no avail. A plastic ice scraper flaked off most of it but it still remains as a translucent stain. At first I thought egg, but I've never had this much trouble removing that before. Any ideas would be appreciated! :nixweiss I'll get pics later.