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 | |
|---|---|---|---|---|---|---|---|
| Volume (gal) | 12,771, 033,247 |
12,920, 462,741 |
13,069, 780,049 |
13,046, 063,751 |
13,244, 006,963 |
13,853, 050,904 |
13,587, 633,643 |
| Oxygen(Wt%) | 2.14 | 2.13 | 2.11 | 2.24 | 2.21 | 2.25 | 2.3 |
| API Gravity | 57.9 | 57.8 | 58.1 | 59 | 58.5 | 58.5 | 58.6 |
| Methanol(%Vol) | 0.02 | 0.01 | 0.01 | 0.01 | 0.02 | 0.01 | 0.01 |
| MTBE(%Vol) | 8.85 | 8.95 | 8.6 | 9.04 | 9.02 | 8.95 | 8.91 |
| Ethanol(%Vol) | 0.93 | 1 | 1.07 | 1.15 | 1.1 | 1.3 | 1.5 |
| ETBE(%Vol) | 0 | 0 | 0 | 0 | 0 | 0 | 0.01 |
| TAME(%Vol) | 0.78 | 0.78 | 0.86 | 0.95 | 0.9 | 0.76 | 0.83 |
| T-Butanol(%Vol) | 0.01 | 0.01 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 |
| Sulfur(ppm) | 307 | 202 | 205 | 126 | 127 | 124 | 110 |
| Aromatics(%Vol) | 22.8 | 22.8 | 22.2 | 19.3 | 20.1 | 20.4 | 20.1 |
| Olefins(%Vol) | 12.2 | 10.9 | 11.4 | 10.6 | 11.8 | 10.8 | 11 |
| Benzene(%Vol) | 0.66 | 0.67 | 0.71 | 0.59 | 0.62 | 0.59 | 0.61 |
| RVP(psi) | 7.61 | 7.6 | 7.6 | 6.78 | 6.79 | 6.8 | 6.83 |
| T50(F) | 202.6 | 203.6 | 201.8 | 204.5 | 204.9 | 204.6 | 203.7 |
| T90(F) | 334.9 | 327.1 | 331.4 | 326.4 | 326.4 | 327.4 | 328.3 |
| E200 | 49.3 | 48.8 | 49.2 | 47.7 | 47.5 | 47.5 | 47.9 |
| E300 | 81.8 | 82.6 | 82.8 | 84.7 | 84.4 | 84.4 | 84.4 |
Averaged Wintertime Parameters
| 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | |
|---|---|---|---|---|---|---|---|
| Volume (gal) | 15,057, 091,643 |
15,146, 324,658 |
15,167, 402,212 |
15,913, 967,307 |
15,838, 238,270 |
16,435, 423,016 |
16,679, 773,135 |
| Oxygen(Wt%) | 2.21 | 2.22 | 2.16 | 2.12 | 2.11 | 2.09 | 2.15 |
| API Gravity | 62.4 | 61.9 | 62 | 62.4 | 62.2 | 62.2 | 62.1 |
| Methanol(%Vol) | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
| MTBE(%Vol) | 8.58 | 8.8 | 8.47 | 8.21 | 8.27 | 8.01 | 7.76 |
| Ethanol(%Vol) | 1.21 | 1.24 | 1.18 | 1.22 | 1.18 | 1.31 | 1.68 |
| ETBE(%Vol) | 0 | 0 | 0 | 0 | 0.02 | 0.01 | 0 |
| TAME(%Vol) | 0.7 | 0.7 | 0.81 | 0.74 | 0.71 | 0.59 | 0.38 |
| T-Butanol(%Vol) | 0.02 | 0.02 | 0.02 | 0.01 | 0.02 | 0.02 | 0.02 |
| Sulfur(ppm) | 260 | 203 | 214 | 200 | 185 | 184 | 164 |
| Aromatics(%Vol) | 19.3 | 19.9 | 19.6 | 19 | 19.2 | 19.4 | 19.4 |
| Olefins(%Vol) | 11.4 | 10.8 | 11.3 | 11.8 | 12.3 | 11.1 | 11 |
| Benzene(%Vol) | 0.62 | 0.65 | 0.65 | 0.65 | 0.64 | 0.64 | 0.64 |
| RVP(psi) | 12.32 | 12.26 | 12.25 | 12.14 | 12.04 | 12.09 | 12.05 |
| T50(F) | 184.4 | 182.5 | 183.6 | 182.9 | 184.2 | 183.4 | 183 |
| T90(F) | 321.3 | 320.3 | 325.2 | 317.2 | 317.3 | 321.3 | 324.9 |
| E200 | 56.1 | 56 | 56 | 56.3 | 55.9 | 56 | 56 |
| E300 | 84.8 | 84.9 | 84.7 | 86.1 | 85.8 | 85.6 | 85.1 |
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