RON/MON boosters are additives commonly used in gasoline to increase the octane rating, which measures a fuel’s ability to resist engine knock or detonation.
That occurs when the fuel-air mixture in an engine’s combustion chamber detonates prematurely, causing a sudden increase in pressure that can damage the engine.
RON (Research Octane Number) and MON (Motor Octane Number) are different methods of measuring a fuel’s octane rating. RON is determined by running the fuel in a laboratory test engine under controlled conditions. In contrast, MON is determined by running the fuel in a test engine under more severe conditions that simulate real-world driving.
RON/MON boosters are typically made up of chemicals such as toluene, xylene, or ethanol, which have higher octane ratings than gasoline. When added to gasoline in small amounts, these chemicals can raise the fuel’s octane rating and reduce the likelihood of engine knock.