The brand WD-40 may be used on garage door tracking and the moving parts, HOWEVER, it will need to be the specific type that is silicone-based instead of water-based. If the incorrect lubricant is used, it will most likely cause problems with smooth operation in the near future. Lubrication on a garage door opener will vary, depending on what type of drive mechanism it has. Some may require a silicone lubricant, and some may require a low temp grease.