WD-40 acts as a lubricant for mechanical parts. The video shows it being used to lubricate garage door hinges, springs, and the chain mechanism. Removing it would change the video's purpose and outcome.
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HOW TO LUBRICATE GARAGE DOORn90% OF PEOPLE DO THIS WRONG!
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Last Fix You'll Ever Need For NOISY Garage Doors. (1/2) #garagedoor #GarageDoorRepair #DIYHomeRepair #HomeMaintenance #HomeProjects #HowTo #fyp #trendingvideos #viral