[papasmurf]

with a PC 7424 RO buffer on my rear window and it did not cause any issues, scratches, etc. The clarity was improved some but there was always to some extent a crease mark left where the window folds in half. I put the product on the pad and touched it to the window before powering up and increasing speed. I have done the same thing on the headlights as well. Eventually the window eventually got too brittle and started to split but it did buy me another year of useage from it by cleaning it with the novus. I bought a glass top eventually and have no intention of ever considering plastic again.