F150online Forums - WD-40 freezing point

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Jim Monheim

12-14-2019 06:36 AM

Quote:

Originally Posted by Wookie (Post 1213169)

For what it is worth, a locksmith friend of mine loves WD-40. He makes lots of money from replacing lock cylinders that have been wrecked by the stuff. I would never put that crap in a lock, if I have a rusty bolt then I use WD-40. Marvel Mystery Oil, or gun lube both are much better. There is also lock oil, I don't remember the name, available.

Joe

WD-40 has freezing temp of -50, lock oil and marvel get thick when temps drop

ManualF150

12-14-2019 09:28 AM

I'm a locksmith, and I can attest to seeing WD-40 destroying locks. Especially ones that are heavily used.

The best stuff I use is Locksaver or PoxyLube-200. Both are PTFE lubricant certified by many lock manufacturers for use in their locks at the factory, and even have MIL-SPEC qualifications for field use.

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