How much damage does putting unleaded gasoline in a diesel engine cause?


Quick Answer

Catastrophic damage can result from putting unleaded gasoline in a diesel engine, including piston, wrist pins and connecting rods destruction. Unleaded gasoline can also reduce the necessary lubrication of sensitive components and eventually destroy them.

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Full Answer

The amount of diesel fuel remaining in the tank at the time unleaded fuel is added and the age of the engine determine how much damage a vehicle may incur. Any amount of unleaded gasoline in 2007 or newer vehicles is likely to damage emissions control components and systems; whereas in older engines, reduced engine power, more noise and warnings from the emissions sensors are likely side effects.

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