I assume it was a rumor started by a graphite company.
Wd 40 for door locks in winter.
Often if your key is hard to push into the lock spraying some wd 40 into the keyway will allow the key to push into the lock.
Fixing a few stubborn locks might involve disassembling cleaning and then reassembling the lock.
It helps to clean out the locks including the graphite that has built up a lot of times due to multiple applications.
Here in the houston area it seems locks need to be lubricated ever now and then.
Make sure the lock cylinder is facing up and spray or pour the lubricant into the cylinder.
Use bike specific lubricants which typically contain teflon.
The material of your door lock or hinge will determine the type of lubricants or cleaners that should be used to maintain them.
Use a lubricant that has a silicone graphite or teflon base only.
Locksmith recommends you spray a moisture displacer like wd 40 directly into the lock.
In our climate when using this type of lubrication.
If faced with a long winter you may need to reapply wd 40 later in the season.
Removing the door lock entirely during wd 40 application can ensure complete coverage of the mechanism providing the highest degree of protection.
First clean the hinge or lock with a recommended solvent or an all in one lubricant such as a penetrating fluid like wd 40.
The simple solution for us to share with our customers is wd 40.
In the winter it freezes and in the summer it collects as much dirt as possible.
Problems associated with wd 40 although wd 40 has many benefits and can prevent car door locks from freezing its petroleum based formula can cause problems.
Wd 40 works wonders for squeaky hinges and linkages just spray directly onto the affected area.
Wd 40 can cause dirt and dust to stick to a chain.
Ironically by cleaning and oiling them you can fix most locks in a matter of minutes.
First clean the keyhole with a penetrating lubricant like wd 40.
In general there are two steps that should be followed before lubricating hinges and locks.
Many people put up with the aggravation of a sticking door lock for years.
This will force out any moisture that may be in the lock.
Spray liberally on all door and trunk locks before the weather freezes.
Do not use wd 40 wd 40 is a solvent not a lubricant and will in fact remove any type of lubricant that is in the cylinder.
When any one asks me for advice on what to you i don t hesitate to suggest wd 40.
Wd 40 can melt the seals in the guns.
Make friends with a lock lubricant like wd 40.
Wd 40 is a great light lubricant for locks.
Let it sit for 5 minutes.
To prevent a frozen lock from freezing you out mr.
But in any case i would say it is a myth.