I bent my lug wrench on my '71 Dodge van trying to loosen lugs. I drove to dealer to ask why they were so tight. Left hand threads on driver side , Dummy. Mopar changed to RH only in '73.Watched a coworker do similar trying to break lug nuts loose. It's a real shame his daddy didn't teach him righty tighty lefty loosey. On a positive note he learned how to replace wheel studs.