How Do You Know If Kerosene Is Bad?
Kerosene that has turned bad will exhibit an unpleasant smell, a darker color than usual, and may contain sediment or particulate matter. It may also cause blockages in the fuel system or clog the filter. Using bad kerosene can damage the burner as well, which can decrease its efficiency and service life. Thus, it is essential to ensure that kerosene is fresh and clean before using it.