Not to be nit picking, but I think the D in WD-40 stands for "displacing". Grease is good for door hinges, but can be messy. I have used the white lithium grease in the spray can with good results. I also use Vaseline or its' equivalent on lots of stuff that I would like to keep from gooing up, especially my hands. Oil works well too, but needs to be used more often which isn't a bad thing if you can keep a schedule.