§ 86.513 Fuel and engine lubricant specifications.
(a) Gasoline. (1) Use gasoline meeting the following specifications for exhaust and evaporative emission testing:
Table 1 of § 86.513—Gasoline Test Fuel Specifications
| Item | Value | Procedure 1 |
|---|---|---|
| Distillation Range: | ||
| 1. Initial boiling point, °C | 23.9–35.0 2 | ASTM D86 |
| 2. 10% point, °C | 48.9–57.2 | |
| 3. 50% point, °C | 93.3–110.0 | |
| 4. 90% point, °C | 148.9–162.8 | |
| 5. End point, °C | 212.8 maximum | |
| Total aromatic hydrocarbon, volume % | 35 maximum | ASTM D1319 or ASTM D5769 |
| Olefins, volume % 3 | 10 maximum | ASTM D1319 or ASTM D6550 |
| Lead (organic), g/liter | 0.013 maximum | ASTM D3237 |
| Phosphorous, g/liter | 0.0013 maximum | ASTM D3231 |
| Sulfur, weight % | 0.008 maximum | ASTM D2622 |
| Dry Vapor Pressure Equivalent (DVPE), kPa | 55.2 to 63.4 4 | ASTM D5191 |
1 Incorporated by reference, see § 86.1.
2 For testing at altitudes above 1,219 m, the specified initial boiling point range is (23.9 to 40.6) °C.
3 ASTM D6550 prescribes measurement of olefin concentration in mass %. Multiply this result by 0.857 and round to the first decimal place to determine the olefin concentration in volume %.
4 For testing at altitudes above 1,219 m, the specified volatility range is 52 to 55 kPa. Calculate dry vapor pressure equivalent, DVPE, based on the measured total vapor pressure, pT, using the following equation: DVPE (kPa) = 0.956 · pT−2.39 (or DVPE (psi) = 0.956 · pT−0.347). DVPE is intended to be equivalent to Reid Vapor Pressure using a different test method.
(2) The following specifications apply for fuels used during service accumulation for certification:
(i) Unleaded gasoline and engine lubricants representative of commercial fuels and engine lubricants which will be generally available through retail outlets shall be used in service accumulation.