________________Fuel_____________________________RON______MON______AKI
equirement for a typical two-stroke outboard engine[6]____69______65_______67
1-pentene_________________________________________84
n-butanol_________________________________________87
E10 gasoline_______________________________________87–93
n-butane__________________________________________91
"regular" gasoline in US and Canada____________________91–92____82–83___87
"EuroSuper" or "EuroPremium"_________________________95______85–86___90–91
t-butanol__________________________________________97
cyclohexane_______________________________________97
"premium" gasoline in US and Canada___________________97-98___88–89 ___93
"SuperPlus" in Germany and Great Britain________________98______89–90____93–94
iso-octane (RON by definition)________________________ 100______90–92____95–96
benzene__________________________________________101
"BP Ultimate 102"[7]________________________________102______93–94____97–98
Generally, octane ratings are higher in Europe than they are in North America and most other parts of the world. This is especially true when comparing the lowest available octane level in each country. In many parts of Europe, 95 RON (90-91 AKI) is the minimum available standard, with 97/98 RON being higher specification (being called Super Unleaded). In Germany, big suppliers like Shell or Aral offer 100 RON gasoline (Shell V-Power, Aral Ultimate) at almost every gas station. The United Kingdom also offers Shell V-Power, but in a 99 RON octane rating, and Tesco fuel stations also supply the Greenergy produced 99 RON "Tesco 99". In Australia, "regular" unleaded fuel is 91 RON, "premium" unleaded with 95 RON is widely available, and 98 RON fuel is also reasonably common. Shell used to sell 100 RON petrol from a small number of service stations, most of which are located in capital cities (stopped in August 2008). In Malaysia, the "regular" unleaded fuel is 92 RON, "premium" fuel is rated at 97 RON, and Shell's V-Power at 97 RON. In the Netherlands Shell V-Power is a 97 RON (labelled as 95 due to the legalities of only using 95 or 98 labelling), whereas in neighbouring Germany Shell V-Power consists of the regular 100 RON racing fuel. In other countries "regular" unleaded gasoline, when available, is sometimes as low as 85 RON (still with the more regular fuel, 95, and premium, around 98, available). In Russia and CIS countries 80 RON (76 MON) is the minimum available, the standard is 92 RON, however, the most used type is 95 RON. In Ireland 95 RON is the only petrol type available through stations.
In Italy, 95 RON is the regular gasoline offered (verde), and most gas stations offer 98 RON as the premium type (Super/Blu Super), many Shell stations close to the cities offer also V-Power Gasoline rated at 100 RON.
This higher rating seen in Europe is an artifact of a different underlying measuring procedure. In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in the United States, Canada and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 8 to 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in the US and Canada, would be 91-92 in Europe. However most European pumps deliver 95 (RON) as "regular", equivalent to 90–91 US AKI=(R+M)/2, and deliver 98, 99 or 100 (RON) (93-94 AKI) labeled as Super Unleaded - thus regular gasoline sold in much of Europe corresponds to premium sold in the United States.
In the United Kingdom, 'regular' petrol has an octane rating of 95 RON, with 97 RON fuel being widely available as the Super Unleaded. Tesco and Shell both offer 99 RON fuel. BP is currently trialling the public selling of the super-high octane petrol BP Ultimate Unleaded 102, which as the name suggests, has an octane rating of 102 RON. Although BP Ultimate Unleaded (with an octane rating of 97 RON) and BP Ultimate Diesel are both widely available throughout the UK, BP Ultimate Unleaded 102 is (as of October 2007) only available throughout the UK in 10 filling stations, and is priced at about two and half times more than their 97 RON fuel.
Did some korek2....
US uses MON & AKI
Based on this table (extracted from "wiki"), it can be said that Octane 91 = RON 100
So in Malaysia we use RON 95 = Octane 85/86. ???or something like that....
?? dunno la but i think this made me more pening....
