| , the fuel grades range from 87 to 91 AKI octane, which is equivalent to a 91-95 RON octane | In other parts of the world, including Saudi Arabia, octane is measured by the RON or MON |
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| So, there is a chance that using a low-octane fuel in an engine that requires a higher octane will damage the engine, whereas there is no harm in using a higher-octane grade than specified | RON and MON are determined by using a special engine with a variable compression ratio, and comparing the knock qualities of a given fuel to that of reference fuels |
The different colors are a visual aid to quality control to prevent fueling vehicles with the wrong grade fuel, and also as a visual aid to prevent fuel laundering such as selling low-grade gasoline as a high-grade gasoline.
| The practice of dying products for visual identification is common in most countries | Mostly, fuels with a higher octane rating are used in high-compression engines, which have higher performance requirements |
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| AKI KSA RON 87 91 91 95• | Using a lower-octane grade petrol than that recommended by the manufacturer risks long-term damage to the engine of older cars |