Door makes noise

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2017 Mazda CX-5 GT, 2016 Mazda6 iGT, 2014 Mazda3 sGT hatchback
Not WD-40. WD stands for water depletion.
You need heavy grade grease. Autozone should carry it.
 
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Mazda, CX-9, Touring
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.
 
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Mazda CX-9 Grand Touring 2015
Alternatively, get some aerosol White Lithium grease, this should be good enough to penetrate the tight spaces
 
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