I recently heard you are supposed to unzip the back window glass on a convertible before putting the top down. I hadn't heard that before (except on Mustangs), and the former owner of my car didn't unzip his glass when he put his top down and he had it for 24 years. He didn't have any issues and I haven't had any either. Anyone have any guidelines for unzipping or leaving alone? Note, the CAUTION tag on the top does not refer to unzip or leave zipped.
