To fix a sticky lock, start by cleaning the keyhole with compressed air and applying a dry, PTFE-based or powdered graphite lubricant (avoid heavy oils). Insert and turn your key several times to work the lubricant through the internal tumblers.
To loosen a stiff lock, apply a dry lubricant like powdered graphite or a specialized PTFE spray into the keyhole and work the key in and out to distribute it. Avoid oil-based lubricants like standard WD-40, as they attract dirt and can worsen sticking over time.
To fix a stiff lock, apply a dry lubricant like powdered graphite or Tri-Flow into the keyway, then work your key in and out to distribute it. Avoid standard oil-based products like WD-40, which can attract dirt and cause the lock to gum up.
Graphite lubricant or silicone spray: These lubricate the locks, helping to keep the internal component working smoothly. Avoid using oil-based products like WD-40, as they can attract more dirt.
WD40 is not recommended for use with locks. WD40 actually removes the natural lubricant in the lock, often making issues worse. Keytek recommends using a specific lock lubricant or graphite powder Our top recommendation is 3-IN-ONE Lock Dry Lube.
Polytetrafluoroethylene, or PTFE, is a Teflon-based lubricant that dries inside the lock to leave behind a non-stick, water-repellent film on all the surfaces. Since it's dry, it doesn't attract dust or dirt.
The best lock lubricants are dry lubricants (like PTFE or graphite) or Teflon-based wet lubricants. Locksmiths strongly advise against using regular household oil or standard WD-40, as they attract dirt and will eventually gum up the lock mechanism.
The ideal way to fix a seized lock is to use a lubricant. WD-40 offers several solutions to maintain your locks: WD-40 Multifunctional Product, WD-40 Specialist Locks Lubricant or WD-40 Specialist PTFE Dry Lubricant. Each of them has its advantages and can therefore meet your lock maintenance needs.
Sometimes a little jiggle is all you need. Gently insert the key all the way into the lock and try wiggling it up and down while turning it slowly. This can help the pins inside the lock align with the key's grooves. Be careful not to use too much force—you don't want to break the key off inside the lock.
Yes, WD-40 is excellent for thawing a frozen lock. It works quickly because it displaces water and contains petroleum distillates that lower the freezing point of the moisture inside the mechanism.
To fix a stuck key, apply a lubricant such as graphite powder or a silicone-based spray to the keyhole. Gently wiggle the key while pulling it out. If this doesn't work, use a pair of needle-nose pliers to grip the key and carefully work it out.
If your lock is hard to turn, the mechanism likely needs lubrication, has built-up dirt, or the door itself has shifted and is misaligned.
Don't use oil.
Oil might assist the moving parts of the motor in your car, but it is never a good idea to squirt it in a stiff lock. The oil will just combine with any grime already in the mechanism and compound the situation.
Use a de-icing product to deal with frozen car door locks
If you don't have one available, there's a way to make it yourself by mixing three parts vinegar to one part water, according to AAA. Fill a spray bottle with your homemade deicer and apply to car door locks to help melt the ice.
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.
Some of the top door lock lubricant options are:
Yes, you can use Vaseline instead of WD-40 if you need a quick substitute. However, keep in mind Vaseline may not work for all applications, including inside locks. While it can work great on door hinges, it may be too sticky for locks and end up attracting dust and dirt particles—which can cause damage to your lock.
Teflon Dry Lubricant
Teflon-based dry lubricant is preferred by some locksmiths over other options. It's a great option because, as well as lubricating your lock, it repels water and dust. Meaning that once you fix a lock with this type of lubricant, you can expect the lock to be in good shape for a long time.
You should avoid using the original WD-40 formula on door locks. It is a penetrating solvent, not a true lubricant. While it provides a quick fix, it will eventually strip away existing factory lubricants, dry out, and attract dirt and dust, leaving your lock gummed up.
If your key is suddenly hard to insert into a lock, the mechanism is likely clogged with debris, the internal pins are sticking, or the metal is misaligned. You can usually fix this quickly by lubricating the lock or checking for obstructions.
To open a rusted padlock, saturate the keyway and shackle with a penetrating lubricant like WD-40 or Liquid Wrench. Allow it to soak for at least 15 minutes. Tap the body and sides with a hammer to help the fluid break up the rust, then gently insert the key and work it back and forth.
For exterior locks, graphite is preferred, as classic WD-40 can gum up lock mechanisms over time. However, professional locksmiths recommend using a dry PTFE or silicone-based spray instead, as graphite can clump up in wet weather and WD-40 acts as a cleaner rather than a true long-term lubricant.