OK Its suppose to be a high of 40 lows of 20 this weekend with rain on Saturday, I just got my sandblaster and wanted to do above the gas tank while its out. Sould I just spray some paint and wait till next year to do it right when its warmer? Or can I put paint on when its that cold? I was planning on putting POR-15 on the rusted spots first. But I need my truck driveable on Monday.