Even a truck that’s sitting for weeks or months needs regular maintenance. Some items are obvious, like the batteries and tires. Others aren't, like the A/C system. But flipping on the air conditioner or defroster will lubricate seals in the compressor, reducing the risk of leaks and costly A/C repairs. Frank Burrow, manager of product support at Red Dot Corp., explains. Time: 3:33; size: 3.3 Mb. Theme music is "Under a Sky" by Edie Carey.