Diesel is a petroleum-based fuel used in compression-ignition engines (diesel engines), commonly found in trucks, buses, generators, and heavy machinery.
Higher energy density than gasoline → better fuel efficiency
No spark plug needed → fuel ignites by compression
Better torque → ideal for heavy-duty vehicles
🧪 Types of Diesel Fuel
Petroleum Diesel → standard fuel from crude oil
Biodiesel → made from vegetable oils or animal fats
Ultra-Low Sulfur Diesel (ULSD) → reduced emissions, widely used today
