[AnotherGoodName]

I'd love to know where this myth came from. Every single test i've seen or done myself have had no issues with it in door locks (fixed a problem and stayed fixed for decades) or on bicycle chains yet you can't have an internet thread about lubricant without somone saying "WD40 ISN'T A LUBRICANT" even though it is most certainly a lubricant.

I feel like this is one of those internet myths someone once said and now everyone just blindly repeats.

My only thought is that there's cheaper generic brands but regardless it's a great tool for the job.

[praptak]

It is a good enough lubricant. In my experience with door hinges they stay non-creaky for much longer with technical vaseline though.

Btw, about a year ago I read that copper grease is absolutely the best for this purpose but I'm still waiting for a hinge to become squeaky so that I can test that.