The vinyl on my 2001 'bu is beginning to dry out, turning two tone, and cracking even. It is primarily along the seams. It has always been well cared for, except we had to store it outdoors this past winter. It has only become worse over the past 3 or so months. I've sprayed it with 3m vinyl cleaner/restorer.
What can I do to stop it from further spreading? What causes it to change colors? Stale water in the seams? HELP, need advice!