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Fuels and Fuel Additives

Reformulated Gasoline Parameters by Reporting Year

Note: This information is based on individual RFG & Anti-Dumping Batch Reports from Importers and Domestic Refiners. California gasolines are not represented in this data. This information is derived from report data and was not measured directly by EPA.

Each parameter value is a volume weighted average calculated when a volume and a parameter were both reported - parameter values are not typical for the total volumes listed. RFG volumes may not account for oxygenates added downstream. Parameter averages were compiled individually and may be subject to errors in reporting.

The Oxygen(wt%) average values were calculated only when an Oxygen(wt%) value greater than zero was reported. All Oxygenate(vol%) values (MTBE, Methanol, Ethanol, ETBE, etc.) were calculated as a group based on the presence of a reported value for Oxygen(wt%) that was greater than zero.

Averaged Summertime Parameters

1997 1998 1999 2000 2001 2002 2003 2004 2005
Volume (gal) 12,489,
014,209
12,751,
858,507
13,069,
780,049
13,067,
092,143
13,243,
677,011
13,853,
055,860
13,594,
004,836
14,220,
295,281
13,573,
361,980
Oxygen(Wt%) 2.15 2.13 2.11 2.24 2.21 2.25 2.30 2.55 2.49
API Gravity 58.0 57.9 58.1 58.9 58.5 58.5 58.6 58.2 58.4
Methanol(%Vol) 0.02 0.01 0.01 0.01 0.02 0.01 0.01 0.01 0.01
MTBE(%Vol) 8.81 8.91 8.60 9.04 9.02 8.95 8.91 7.42 7.02
Ethanol(%Vol) 0.95 1.02 1.07 1.14 1.10 1.30 1.50 3.04 3.03
ETBE(%Vol) 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01
TAME(%Vol) 0.79 0.79 0.86 0.95 0.90 0.76 0.83 0.42 0.46
T-Butanol(%Vol) 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.02
Sulfur(ppm) 314 204 205 126 127 124 110 80 71
Aromatics(%Vol) 22.7 22.7 22.2 19.3 20.1 20.4 20.1 20.1 20.7
Olefins(%Vol) 12.3 11.0 11.4 10.6 11.8 10.8 11.0 11.4 11.9
Benzene(%Vol) 0.66 0.67 0.71 0.59 0.62 0.59 0.61 0.59 0.66
RVP(psi) 7.63 7.61 7.60 6.78 6.79 6.80 6.83 6.87 6.91
T50(F) 201.9 203.1 201.8 204.7 204.9 204.6 203.7 204.5 201.9
T90(F) 334.6 326.4 331.4 326.6 326.4 327.4 328.3 333.2 329.5
E200 49.5 48.9 49.2 47.6 47.5 47.5 47.9 47.9 48.7
E300 81.9 82.7 82.8 84.7 84.4 84.4 84.4 83.4 84.0

Averaged Wintertime Parameters

1997 1998 1999 2000 2001 2002 2003 2004 2005
Volume (gal) 14,771,
883,555
14,922,
645,882
15,167,
402,212
15,951,
122,397
15,840,
926,018
16,435,
423,016
16,678,
023,167
17,209,
178,629
17,358,
792,676
Oxygen(Wt%) 2.20 2.22 2.16 2.12 2.11 2.09 2.14 2.38 2.37
API Gravity 62.5 62.0 62.0 62.4 62.2 62.2 62.1 62.0 61.9
Methanol(%Vol) 0.02 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01
MTBE(%Vol) 8.74 8.94 8.47 8.21 8.27 8.01 7.76 7.03 6.63
Ethanol(%Vol) 1.10 1.16 1.18 1.22 1.18 1.31 1.68 2.68 2.86
ETBE(%Vol) 0.00 0.00 0.00 0.00 0.02 0.01 0.00 0.00 0.03
TAME(%Vol) 0.72 0.71 0.81 0.74 0.72 0.59 0.38 0.33 0.29
T-Butanol(%Vol) 0.02 0.02 0.02 0.01 0.02 0.02 0.02 0.02 0.02
Sulfur(ppm) 264 205 214 200 185 184 164 101 81
Aromatics(%Vol) 19.2 19.8 19.6 19.0 19.2 19.4 19.4 19.1 19.5
Olefins(%Vol) 11.5 10.9 11.3 11.8 12.3 11.1 11.0 11.1 11.2
Benzene(%Vol) 0.62 0.65 0.65 0.65 0.64 0.64 0.64 0.63 0.66
RVP(psi) 12.42 12.32 12.25 12.13 12.04 12.09 12.05 12.05 11.89
T50(F) 183.4 181.6 183.6 182.9 184.2 183.4 183.0 181.5 180.7
T90(F) 320.7 319.9 325.2 317.2 317.3 321.3 324.9 325.0 323.5
E200 56.5 56.1 56.0 56.3 55.9 56.0 56.0 56.2 56.3
E300 85.0 85.0 84.7 86.1 85.8 85.6 85.1 85.0 85.3

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