Petrol

Petrol is a complex mixture , a highly refined, volatile liquid hydrocarbon fuel derived from crude oil and is formulated primarily for use in spark-ignition internal combustion engines, such as those found in cars, motorcycles, small boats, and light machinery.
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Petrol is produced through a combination of refinery processes including distillation, catalytic cracking, reforming, and blending, which adjust its volatility, stability, and combustion performance. Modern petrol contains additives to improve engine efficiency, reduce deposits, prevent corrosion, and control emissions.
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A primary performance parameter is the octane rating, measured as Research Octane Number (RON) and Motor Octane Number (MON), which defines the fuel’s resistance to knock in spark-ignition engines. Typical commercial grades range from 91–98 RON, depending on market standards