What is the effect of impurities in fuel?

Impurities in fuel can cause significant negative effects on engine performance and longevity. When fuel contains contaminants such as dirt, water, and other foreign substances, these impurities can contribute to the formation of deposits within the engine. These deposits can lead to incomplete combustion, which not only reduces the engine's efficiency but can also result in knocking or misfiring.

Furthermore, impurities can block fuel filters and injectors, leading to restricted fuel flow. This restriction can cause the engine to run poorly, exhibit reduced power output, and increase emissions due to inefficient combustion. Over time, the presence of impurities may also result in corrosion of engine components and other internal parts, which can lead to costly repairs or even complete engine failure.

In summary, the presence of impurities in fuel is detrimental, as it directly impacts engine performance, efficiency, and longevity.