WD-40 Specialist High Performance Silicone Lubricant
WD-40® Brand on Twitter: "Car doors can get a bit sticky in colder weather. To prevent them from freezing shut, spray down the door seals with WD-40® Specialist® Water Resistant Silicone Lubricant.
WD-40 Specialist 15-oz Degreaser, Industrial-strength in the Hardware Lubricants department at Lowes.com