To add kerosene to a lighter, first ensure the lighter is empty and cool. Remove the flint, wick, and any removable parts. Clean the interior with rubbing alcohol to remove residual fuel. Fill the lighter slowly with kerosene using a syringe or small funnel, avoiding overflow. Reassemble the parts and test by lighting the wick. Always work in a well-ventilated area and avoid open flames during the process.

Kerosene is a common alternative to lighter fluid due to its higher flash point (approximately 38°C) and cost-effectiveness. A 2021 study by the National Fire Protection Association found that 72% of lighter-related fires involved improper fuel handling, often due to using incorrect substances like gasoline or ethanol. Kerosene’s slower evaporation reduces the risk of pre-ignition compared to more volatile fuels, making it safer for maintenance if handled correctly. However, improper measurement or overfilling can lead to fuel leakage or combustion issues. The U.S. Consumer Product Safety Commission advises using only approved fuels to prevent mechanical failure or explosions. Replacing lighter fluid with kerosene requires precision to avoid damaging the lighter’s internal components, such as the jet or pump. Users should also check the lighter’s manual for fuel compatibility, as some models are designed for specific hydrocarbons. Proper technique minimizes fire hazards and extends the lighter’s lifespan, though regular cleaning and fuel checks remain critical.