TikTok has become the place for random life hacks and lessons we never knew we needed - from bringing wilted vegetables back to life to repairing broken zips at home in under 60 seconds.
It has now taught us something about our car that we had been pretty clueless about for years.
A man named Justin, who posts under the username @milltj01, has created a video to share a discovery he made about the fuel cap on his car.
