Here's why:
* Different fuel types: Diesel fuel and fuel oil are distinct fuels with different chemical compositions and properties. Fuel oil has a much higher viscosity and a lower cetane number than diesel fuel.
* Fuel system incompatibility: Diesel engines are designed specifically to handle the properties of diesel fuel. Running fuel oil through the fuel system can lead to:
* Clogging and damage: Fuel oil's thick viscosity can clog fuel filters, injectors, and other components. This can cause engine damage, fuel system failure, and reduced performance.
* Incomplete combustion: Fuel oil's low cetane number makes it harder to ignite properly, resulting in incomplete combustion. This can lead to excessive smoke, poor performance, and increased emissions.
* Corrosion and wear: Fuel oil can corrode and wear down engine components due to its different chemical composition.
* Engine damage: In severe cases, running fuel oil in a diesel truck can lead to catastrophic engine damage, such as:
* Seizure: Fuel oil can cause the engine to seize due to lubrication problems and excessive friction.
* Cylinder head damage: The high viscosity of fuel oil can damage cylinder head gaskets and valves.
* Fuel pump failure: The fuel pump may be unable to handle the thick fuel oil, leading to failure.
In summary: Running fuel oil in a diesel truck is extremely dangerous and should never be done. It can cause severe damage to the engine and fuel system, leading to costly repairs or even total engine failure.
