Date: Sun, 3 Jan 1999 11:27:24 -0800 From: "Douglas Swank" <dswanknopsamlwebSPAM.com> Subject: Re: Gas mileage?
Johan LAUWERS wrote: > >Indeed it's RON. > >What does MON means ? It's a abbreviation not used in Belgium. MON stands for Motor Octane Number, and RON for Research Octane Number. They are both arrived at through different experiemental means, and do not have a direct linear relationship to each other, though it is close. In the US, the gasoline stations post the commonly called "Road" Octane Number, or [(RON+MON) / 2]. MON is always lower than RON, so that is why our octane levels may *seem* low, when in fact the different grades between the US and Belgium are very likely the same or very similar. -Doug
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