WD-40 might do a lot of things, but as a lubricant, it is weak and short lived. Those that grab it for everything that needs lubricating, will find they need to keep grabbing it every week or two, until they find the correct product for lubricating.<br><br>My favorite use for it is as an adhesive cleaner. You know when you unwrap a decade old bundle of wires wrapped in electrical tape and they are all stick and dirty. WD-40 on a rag to wipe the wires is magical there, but everything else, it is a last resort for me. One needs to wipe off the wd-40 residue before rewrapping wires. Think Rubbing alcohol, and honestly, on electrical tape residue, rubbing alcohol works just as good as WD-40 for removing old adhesive, especially the 91% RA.<br><br>I'll clean and wipe my spark plug wires or anything rubber with spray silicone, use PB blaster penetrating fluid for freeing stuck nuts/bolts, use graphite spray in my door locks/ catches, and white lithium grease on my formerly squeaky leaf springs. I had forgotten they used to squeak.<br><br>Anything rubber gets spray silicone spray or Sylglide grease. Nothing else is safe <br><br>WD-40 is not safe for rubber despite its claims otherwise. Petroleum distillates eat rubber.<br><br>Whatever you spray it on that was squeaking, will squeak again in a short amount of time, and it is nearly useless as a penetrating fluid.<br><br>As far as water displacement, can't remember the last time I needed that. Everything that can get wet and cause issues, has been protected from getting wet, and I'm not driving through deep water. That is a nightmare for wheel bearings and universal joints, and perhaps your rear axle too if the vent tube's outlet is not high enough.
