Is WD-40 a miracle product?

https://lemmy.world/post/43482094

Is WD-40 a miracle product? - Lemmy.World

Looking for some maintenance advice. I’m about to embark on some touring. I don’t have space to take more than one canned product. Is WD-40 what I need? As I understand it from some research, WD-40 is by some magic both a degreaser and a lubricant. This is mysterious to me. In my mental model of chemistry, you degrease with detergent, not more grease. So now I’m imagining that WD-40 is a sort of “light grease” which dissolves “heavy grease”. Is that right? So if I can only take one product, is WD-40 it? Also, is there a generic name for it, or cheaper similar products to look for which do the same thing?

It’s handy for cleaning but for protection/lubrication use something else.

There was a noisy door in an office I used to work in. I cleaned it with WD-40 (dubya dang) and then lubricated it with 3-in-one oil. It went from being a door i could hear being opened to being a door I could hear slamming against the wall when it shut.