Can You Use WD-40 as Starting Fluid? A Definitive Answer
The short answer is no, you should absolutely not use WD-40 as starting fluid. While WD-40 might seem like a quick fix for a car that won't start, using it as a starting fluid is dangerous and ineffective, potentially causing significant damage to your engine. This article will delve into the reasons why, explore safer alternatives, and address some common misconceptions.
What is WD-40 and What is Starting Fluid?
Understanding the difference between WD-40 and proper starting fluid is crucial. WD-40 is a multi-purpose product designed for lubricating, cleaning, and protecting various surfaces. It's not a fuel, nor is it designed to be easily combustible in the way starting fluid is. Starting fluid, on the other hand, is a highly volatile and flammable mixture specifically formulated to aid in engine ignition. It contains highly refined, easily vaporized hydrocarbons that quickly ignite to help a cold engine start.
Why WD-40 is NOT Suitable as Starting Fluid
WD-40 contains solvents and lubricants that aren't designed for combustion. Using it in your engine can lead to several problems:
- Engine Damage: The lubricants and solvents in WD-40 can foul spark plugs, damage oxygen sensors, and leave residue buildup in the combustion chamber, potentially leading to misfires, poor performance, and ultimately, significant engine damage requiring costly repairs.
- Harmful Emissions: Burning WD-40 releases harmful chemicals and pollutants into the atmosphere, contributing to air pollution.
- Inconsistent Results: Unlike purpose-made starting fluid, WD-40's inconsistent chemical makeup means its ignition properties are unreliable. It may not ignite easily, or it could ignite erratically, leading to inconsistent engine operation or complete failure to start.
- Fire Hazard: While WD-40 is flammable, its flammability isn't controlled like in starting fluid. Using it improperly near an ignition source could lead to a fire.
What to Do Instead of Using WD-40
If your car isn't starting, several safer and more effective options exist:
- Check the Battery: A dead or weak battery is a common cause of starting issues. Have it tested or replaced if necessary.
- Inspect the Starter Motor: A malfunctioning starter motor can prevent your engine from cranking. A qualified mechanic can diagnose and repair this problem.
- Fuel System Issues: Low fuel, a clogged fuel filter, or problems with the fuel pump are other potential culprits. Addressing these issues requires professional diagnosis and repair.
- Use Proper Starting Fluid (If Necessary): If you suspect a fuel delivery problem and need a short-term solution before professional help arrives, use an appropriate starting fluid designed for automotive engines. Always follow the instructions carefully.
Is WD-40 Flammable?
Yes, WD-40 is flammable, but that doesn't make it suitable for starting a car. Its flammability is different from the carefully controlled, easily vaporized nature of automotive starting fluid. Burning WD-40 will produce harmful byproducts and may not effectively start the engine, increasing the risk of damage.
Can WD-40 Clean a Dirty Carburetor?
While WD-40 can clean some light grime and grease, it is not a suitable carburetor cleaner. Using WD-40 in a carburetor can leave behind residue, leading to operational issues. Use a dedicated carburetor cleaner for optimal results and to avoid potentially harming your engine.
Conclusion: Avoid WD-40 as Starting Fluid
In conclusion, using WD-40 as starting fluid is highly discouraged. It presents significant risks to your engine's health and the environment. Always use appropriate and specifically designed products for starting your car or maintaining its systems. If you are experiencing starting problems, seek professional help to diagnose and repair the underlying issue.
