What fuel should be used in diesel engines commonly found in buses?
Show the correct answer
Correct answer
B. Diesel oil meeting the relevant standards.
Explanation
In the photo, you can see the open fuel filler flap in the blue body of a bus. For the diesel engine of a bus, you use diesel oil that meets the relevant standard - answer B.
The Road Traffic Act requires that using a vehicle does not endanger safety and does not cause emissions of harmful substances above the limits. A diesel engine is designed to run on diesel oil with specific parameters, and the quality of fuel at filling stations is checked. Heating oil (answer A) has a different composition and different additives, it can damage the injectors and the pump, and it is not intended for powering vehicles - using it in this way also breaks the excise tax rules. Adding kerosene (answer C) is an old winter method that today damages modern injection systems; in winter you fill up with winter or arctic diesel oil.
Legal basis: Art. 66 para. 1 point 1 and 3 of the Road Traffic Act (Prawo o ruchu drogowym)