The numerical average of the Research Octane Number (RON) and the Motor Octane Number (MON) for a given grade of gasoline (petrol), the posted octane rating on US pumps.
R+M/2
Definition
Numerical Average of Research & Motor Octane Numbers
R+M/2 means Numerical average of research & motor octane numbers. The numerical average of the Research Octane Number (RON) and the Motor Octane Number (MON) for a given grade of gasoline (petrol), the posted octane…
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