Multiple choice

Diesel oil is preferred for heavy motor vehicles because

  1. it is cheap

  2. it causes less damage to the engine

  3. of its higher efficiency and fuel economy

  4. of its higher production from crude
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Diesel engines have a higher compression ratio than gasoline engines, which leads to greater thermal efficiency and better fuel economy, making them ideal for heavy vehicles that require significant power.

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