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70
votes
17answers
37k views

When should I not use WD-40?

Looks like WD-40 can be used for lubricating just about any metal parts. Are there non-obvious cases where using WD-40 will be harmful to the stuff lubricated?
13
votes
5answers
16k views

What kind of lubrication should I use for a lock?

I recently made the Yale lock on my front door much easier to open by spraying some WD-40 in there. However, I just saw this question on WD-40 not being a “true” lubricant, and wondered whether it ...
18
votes
2answers
1k views

Why exactly is WD-40 not a true lubricant?

According to this answer WD-40 is not a true lubricant. I don't get it - even Wikipedia says The long-term active ingredient is a non-volatile, viscous oil which remains on the surface, providing ...
14
votes
7answers
5k views

Lubricant for squeaky doors

I'm looking for a long term solution to my squeaky doors. Our home is fitted with brass hinges on all doors and lately they have all been starting to squeak. I've tried several silicone based ...
5
votes
1answer
4k views

What are some tips/tricks to garage door lubrication?

Are there any gotchas to garage door lubrication? I have found the Prime Flo product on Home Depot's website. Can I lubricate the large spring at the top of the garage door? What about the garage ...
6
votes
3answers
8k views

How do I lubricate plastic rollers for sliding closet doors?

I just installed some new sliding closet doors, but unfortunately they're a bit squeaky/noisy when operating. They are "Reliabilt" doors from Lowes, the actual company that makes these is SGA. There's ...