How will a small amount of gasoline harm a diesel engine?

A small amount of gasoline in a diesel engine can lead to several issues, as diesel engines rely on the high compression of diesel fuel for ignition. Gasoline has a lower flash point and can cause pre-ignition, resulting in knocking, reduced lubrication, and potential engine damage. It can also dilute the engine oil, reducing its effectiveness and increasing wear on engine components. Overall, using gasoline in a diesel engine can lead to performance problems and costly repairs.