A garage door is usually a large heavy door on a garage that opens either by an internal motor or manually. Garage doors are usually big enough to properly accommodate cars and other bigger vehicles. Smaller garage doors can be constructed from a single panel that tilts back and down over the garage roof. One way to keep your garage door working smoothly year round is to lubricate it on a regular basis. Garage door lubrication involves spraying a light coat of lubricant into the moving parts such as rollers, tracks, hinges, and springs at least twice a year.