Best way to lubricate a door lock here is a simple technique to fixing a stiff door lock.
Stiff door lock wd40.
This will help to lo.
First clean the keyhole with a penetrating lubricant like wd 40.
Hold down the spray button until the wd 40 begins to overflow from the lock opening.
Wd 40 works wonders for squeaky hinges and linkages just spray directly onto the affected area.
Wd 40 is a great light lubricant for locks.
Press down on the button on the rear of the wd 40 canister to begin releasing the lubricant into the lock.
Just know that over time the liquid lubricants inside your door lock will attract traces of dirt and dust.
Spray the wd 40 into the lock.
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.
Ironically by cleaning and oiling them you can fix most locks in a matter of minutes.
This video will show you how to use wd 40 penetrating oil to fix a stubborn or stuck door knob by spraying some wd 40 into the keyhole.
Wd 40 is a great lubricant but any type of liquid lubricant in your door lock will eventually attract dirt and therefore will gum up the lock.
Fixing a few stubborn locks might involve disassembling cleaning and then reassembling the lock.
Many people put up with the aggravation of a sticking door lock for years.