How to lubricate a lock.

It is a good idea maintain your lock by lubricating it on a regular basis. This creates less wear and tear and helps avoids issues of the lock failing and keys breaking at the most inconvenient times.

How often should I lubricate?

In most cases every 3 months should be sufficient, however if the lock has a high amount of use you may want to do it more frequently.

WD40 and GT85

What should I use to lubricate my lock?

Firstly please refer back to the lock manufacturer to see what lubricant they recommend. In most cases we would recommend a PTFE based spray oil is the best (GT85 or WD-40s Specialist Anti Friction Dry PTFE). The PTFE oil dries inside and creates a thin film across all the surfaces inside the lock. Most people will have easy access to WD-40 and although this can be a 'quick fix' to simulate the lock being lubricated, WD-40 is not a good lubricant and will dry out after a few days giving no future protection.

Method to lubricate

Providing the lock is in good working and clean condition (i.e. its not sticky or seized), apply the oil can straw and insert into the keyhole. Spray a couple of short doses and insert your key in and out of the lock several times and then rotate to operate the lock. Wipe the oil from the key and leave to dry. If you're lubricating using a dry powder such as graphite powder, please refer back to the manufacturer's direction for applying.

Spray into lock
Spray into lock
Move key in and out of lock

Do I need to clean my lock?

Most locks don’t need regular cleaning. However, if your lock is near a coastal location or is fitted to a vehicle, it’s worth cleaning frequently. The lock is likely to attract salt which sits in the lock and dries the lock out. A lock moving around on the roads (i.e. a removable Towbar or Caravan) will also attract exhaust emissions and dirt from the road.

What do I clean a lock with?

In most cases standard WD-40 is recommended.

Method to clean

Apply the oil can straw and insert into the keyhole. Spray a couple of doses and leave for a few minutes. Insert your key in and out of the lock several times, wiping the oil from the key each time using a tissue or cloth. Repeat the process again. Providing the oil film on the key is clean you can leave for the WD-40 to dry out. If the oil film on the key has a slightly dirty look repeat the process for a 3rd and if need be a 4th time. Allow at least a day for the WD-40 to dry out before lubricating with a PTFE oil. Never apply dry powder lubricant such as graphite powder when the lock has a wet oil inside as the 2 will mix to form a sludge.

See also

How to unseize a lock