Lubricating a garage door is a pretty simple process. Start off by making sure there is no dirt or debris around the rollers or the tracks. Once it's clean, start applying the lubricant on each of the hinges individually. Make sure you include the ball bearings as well. Once you're done lubricating the door, wipe off any excess liquid to prevent corrosion. Open and close the door a few times to ensure that the liquid spreads evenly across the hinges.