Consequently, using WD-40 on a hot engine is strongly discouraged and creates a significant fire risk, making it appear flammable in that specific scenario. Lubrication Myths Another reason the flammability question persists is a common misunderstanding about what WD-40 is designed to do.
WD-40 Safety Precautions for Workshop Use
Never apply WD-40 to or near open flames, hot surfaces, or electrical sparks. This oil is highly refined and has a very high flash point, well above 100 degrees Fahrenheit, which classifies it as combustible rather than flammable in its pure, stable state.
The Role of Propellants in Aerosol Cans While the liquid itself is not flammable, the method of delivery for WD-40 is crucial to its safety profile. WD-40 is a complex mixture, but its primary base is a low-viscosity hydrocarbon known as white oil.
WD-40 Safety Precautions for Workshop Use
WD-40's Intended Function vs. Use WD-40 only in well-ventilated areas to avoid the buildup of fumes.
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