CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER U—AIR POLLUTION CONTROLS (Parts 1027–1074) > PART 1065—ENGINE-TESTING PROCEDURES > SUBPART H—Engine Fluids, Test Fuels, Analytical Gases and Other Calibration Standards (§1065.701 to §1065.790) > 1065.705—Residual and intermediate residual fuel.

1065.705—Residual and intermediate residual fuel.

This section describes the specifications for fuels meeting the definition of residual fuel in 40 CFR 80.2, including fuels marketed as intermediate fuel. Residual fuels for service accumulation and any testing must meet the following specifications:
(a) The fuel must be a commercially available fuel that is representative of the fuel that will be used by the engine in actual use.
(b) The fuel must meet the specifications for one of the categories in the following table:
Table 1 of § 1065.705 —Service Accumulation and Test Fuel Specifications for Residual Fuel
Characteristic Unit Category ISO-F- Test method reference 1
RMA 30 RMB 30 RMD 80 RME 180 RMF 180 RMG 380 RMH 380 RMK 380 RMH 700 RMK 700
Density at 15 °C, max kg/m 3 960.0 975.0 980.0 991.0 991.0 1010.0 991.0 1010.0 ISO 3675 or ISO 12185: 1996/Cor 1:2001 (see also ISO 8217:2005(E) 7.1).
Kinematic viscosity at 50 °C, max cSt 30.0 80.0 180.0 380.0 700.0 ISO 3104:1994/Cor 1:1997.
Flash point, min °C 60 60 60 60 60 ISO 2719 (see also ISO 8217:2005(E) 7.2).
Pour point (upper):
Winter quality, max °C 0 24 30 30 30 30 ISO 3016.
Summer quality, max 6 24 30 30 30 30 ISO 3016.
Carbon residue, max (kg/kg)% 10 14 15 20 18 22 22 ISO 10370:1993/Cor 1:1996.
Ash, max. (kg/kg)% 0.10 0.10 0.10 0.15 0.15 0.15 ISO 6245.
Water, max (m3/m3)% 0.5 0.5 0.5 0.5 0.5 ISO 3733.
Sulfur, max (kg/kg)% 3.50 4.00 4.50 4.50 4.50 ISO 8754 or ISO 14596: 1998/Cor 1:1999 (see also ISO 8217:2005(E) 7.3).
Vanadium, max mg/kg 150 350 200 500 300 600 600 ISO 14597 or IP 501 or IP 470 (see also ISO 8217:2005(E) 7.8).
Total sediment potential, max (kg/kg)% 0.10 0.10 0.10 0.10 0.10 ISO 10307-2 (see also ISO 8217:2005(E) 7.6).
Code of Federal Regulations 728
Aluminium plus silicon, max mg/kg 80 80 80 80 80 ISO 10478 or IP 501 or IP 470 (see also ISO 8217:2005(E) 7.9).
Used lubricating oil (ULO), max Fuel shall be free of ULO. We consider a fuel to be free of ULO if one or more of the elements zinc, phosphorus, or calcium is at or below the specified limits. We consider a fuel to contain ULO if all three elements exceed the specified limits. IP 501 or IP 470 (see ISO 8217:2005(E) 7.7).IP 501 or IP 500 (see ISO 8217:2005(E) 7.7). IP 501 or IP 470 (see ISO 8217:2005(E) 7.7).
mg/kg 15
Zinc 15
Phosphorus 15
Calcium 30
1 ISO procedures are incorporated by reference in § 1065.1010 . See § 1065.701(d) for other allowed procedures.

Code of Federal Regulations

[73 FR 37340, June 30, 2008]