Octane Rating - Examples of Octane Ratings

Examples of Octane Ratings

The RON/MON values of n-heptane and iso-octane are exactly 0 and 100, respectively, by the definition of octane rating. The following table lists octane ratings for various other fuels.

Fuel RON MON AKI
hexadecane < -30
n-octane -10
n-heptane (RON and MON 0 by definition) 0 0 0
diesel fuel 15–25
2-methylheptane 23 23.8
n-hexane 25 26.0 26
1-pentene 34
2-methylhexane 44 46.4
3-methylhexane 55.0
1-heptene 60
n-pentane 62 61.9
requirement for a typical two-stroke outboard engine 69 65 67
Pertamina "Premium" gasoline in Indonesia 88
"Regular" gasoline in Japan (Japanese Industrial Standards) 90
n-butanol 92 71 83
Neopentane (dimethylpropane) 80.2
"regular" gasoline in Australia, New Zealand, Canada and the US 91–92 82–83 87
Pertamina "Pertamax" gasoline in Indonesia 92
Shell "Super" in Indonesia 92
n-butane 94 90.1
Isopentane (methylbutane) 90.3
Pertamina "Pertamax Plus" gasoline in Indonesia 95
Shell "Super Extra" in Indonesia 95
Shell "FuelSave " in Malaysia 95
"EuroSuper" or "EuroPremium" or "Regular unleaded" in Europe, "SP95" in France 95 85–86 90–91
"Premium" or "Super unleaded" gasoline in US (10% ethanol blend) 97 87-88 92-93
Shell "V-Power 97" in Malaysia 97
Shell "V-Power 98", Caltex "Platinum 98 with Techron", Esso Mobil "Synergy 8000" and SPC "LEVO 98" in Singapore 98 89–90 93–94
Great Britain, Slovenia and Spain, "SP98" in France 98 89–90 93–94
"SuperPlus" in Germany 98 88
Tesco "Momentum^99" in UK 99 87
"Premium" gasoline in Japan (Japanese Industrial Standards) 100
Pertamina "Pertamax Racing" in Indonesia 100
Shell V-Power in Italy and Germany 100 88
Eni(or Agip) Blu Super +(or Tech) in Italy 100 87 94
IP Plus 100 in Italy 100
Tamoil WR 100 in Italy 100
San Marco Petroli F-101 in Italy(northern Italy only, just a few gas stations) 101
Petro-Canada "Ultra 94" in Canada 101.5 88 94
Aral Super 95 in Germany 95 85
Aral Super 95 E10 (10% Ethanol) in Germany 95 85
Aral SuperPlus 98 in Germany 98 88
Aral Ultimate 102 in Germany 102 88
IES 98 Plus in Italy 98
2,2-dimethylbutane 93.4
2,3-dimethylbutane 94.4
ExxonMobil Avgas 100 99.5 (min)
Shell "V-Power Racing" in Australia - discontinued July 2008 100
"isooctane" (RON and MON 100 by definition) 100 100 100
benzene 101
i-butane 102 97.6
"BP Ultimate 102 - now discontinued" 102 93–94 97–98
t-butanol 103 91 97
2,3,3-trimethylpentane 106.1 99.4 103
ethane 108
2,2,3-trimethylpentane 109.6 99.9 105
toluene 111 95 103
E85 gasoline 102-105 85-87 94-96
propane 112 97
2,2,3-trimethylbutane 112.1 101.3 106
xylene 117
isopropanol 118 98 108
methanol 108.7 88.6 98.65
ethanol 108.6 89.7 99.15
2,5-Dimethylfuran 119
methane 120 120 120
hydrogen > 130

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