Is WD-40 Good for Car Locks? The Truth Revealed

If you have ever had a problem with your car lock, you might have wondered if WD-40 can help you. WD-40 is a popular product that many people use for various purposes, such as removing rust, cleaning stains, and lubricating hinges. But is it a good idea to use WD-40 on your car lock? The answer is not so simple.

In this article, we will explain the pros and cons of using WD-40 on car locks, and what alternatives you can use instead.

What is WD-40?

WD-40 is a water displacement spray that contains a mixture of lubricants and anti-corrosion agents. It was originally developed in 1953 by the Rocket Chemical Company for the aerospace industry, to protect metal parts from rust and corrosion. The name WD-40 stands for Water Displacement, 40th formula, as it took 40 attempts to get the right formula. 

WD-40 can be used for many applications, such as loosening stuck bolts, removing grease, and preventing squeaks. However, WD-40 is not a true lubricant, as it does not provide lasting lubrication. It is more of a solvent and degreaser, that evaporates quickly and leaves behind a thin film of oil. 

Why Do Some People Use WD-40 on Car Locks?

Some people use WD-40 on car locks because they think it can lubricate and free up the lock mechanism. This can be true in some cases, especially if the lock is jammed or frozen due to rust, dirt, or ice. WD-40 can penetrate and dissolve these substances, and make the lock easier to operate. 

However, this is only a temporary solution, and not a recommended one. WD-40 is not designed for car locks, and it can cause more problems in the long run. Here are some of the drawbacks of using WD-40 on car locks:

• WD-40 can attract and trap dust and dirt, which can clog the lock and make it harder to turn.
• WD-40 can wash away the original lubricant in the lock, which can cause wear and tear on the metal parts.
• WD-40 can react with the plastic and rubber components in the lock, which can damage them and affect their function.
• WD-40 can leave behind a sticky residue, which can attract moisture and cause corrosion and rust.

What is the Best Lubricant for Car Locks?

The best lubricant for car locks is a graphite-based lubricant, which is specially designed for locks. Graphite is a form of carbon that has a slippery and dry texture. It can reduce friction and prevent wear and tear on the lock parts. Graphite does not attract or hold dirt, and it does not evaporate or leave behind any residue. Graphite can also withstand high temperatures and moisture, and it does not damage the plastic and rubber components in the lock.

You can find graphite lubricant in powder or spray form, at hardware stores or online. To use graphite lubricant on your car lock, you need to follow these steps:

1. Clean the lock with a dry cloth or compressed air, to remove any dirt or debris.
2. Apply a small amount of graphite lubricant to the key, and insert it into the lock. Turn the key several times, to distribute the lubricant evenly inside the lock. 
3. Repeat the process if needed, until the lock operates smoothly and easily.
4. Wipe off any excess lubricant from the key and the lock, to avoid staining your clothes or hands.

You should lubricate your car lock regularly, at least once a year, to keep it in good condition and prevent it from sticking or jamming. 

Conclusion

WD-40 is not a good lubricant for car locks, as it can cause more harm than good. It can attract dirt, wash away the original lubricant, damage the plastic and rubber parts, and cause corrosion and rust. The best lubricant for car locks is a graphite-based lubricant, which can provide lasting lubrication without attracting debris or damaging the lock components. You should use graphite lubricant on your car lock regularly, to keep it working smoothly and prevent any problems.

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