[AcampoDave]

This may not apply to a truck, but I used to regularly cover a '70 Cad with a nice cover in my garage. Over the years the paint on the ridges of the metal, (tail fins, fenders, etc) began to show wear from installing, removing, and positioning the dusty cover. Ultimately, I quit using it as I felt it was doing more harm than good. These days I use a detail spray and soft microfiber type cloths to regularly dust my garaged trucks. Just my 2 cents worth