Dealing with a loud and squeaky garage door? Regular garage door lubrication will keep your garage door system running smooth and quiet for years. If your garage door isn’t properly lubricated, it can lead to permanent damage and shorten the life of your garage door. Dr. Ernie Bernarducci, VP of Research and Development at WD-40 Company, demonstrates how to use 3-IN-ONE® Garage Door lubricant to keep your garage door operating properly.