1.1This specification covers seven grades of diesel fuel oils suitable for various types of diesel engines. These grades are described as follows:
1.1.1Grade No. 1-D S15-A special-purpose, light middle distillate fuel for use in diesel engine applications requiring a fuel with 15 ppm sulfur (maximum) and higher volatility than that provided by Grade No. 2-D S15 fuel.2
1.1.2Grade No. 1-D S500-A special-purpose, light middle distillate fuel for use in diesel engine applications requiring a fuel with 500 ppm sulfur (maximum) and higher volatility than that provided by Grade No. 2-D S500 fuel.2
1.1.3Grade No. 1-D S5000-A special-purpose, light middle distillate fuel for use in diesel engine applications requiring a fuel with 5000 ppm sulfur (maximum) and higher volatility than that provided by Grade No. 2-D S5000 fuels.
1.1.4Grade No. 2-D S15-A general purpose, middle distillate fuel for use in diesel engine applications requiring a fuel with 15 ppm sulfur (maximum). It is especially suitable for use in applications with conditions of varying speed and load.2
1.1.5Grade No. 2-D S500-A general-purpose, middle distillate fuel for use in diesel engine applications requiring a fuel with 500 ppm sulfur (maximum). It is especially suitable for use in applications with conditions of varying speed and load.2
1.1.6Grade No. 2-D S5000-A general-purpose, middle distillate fuel for use in diesel engine applications requiring a fuel with 5000 ppm sulfur (maximum), especially in conditions of varying speed and load.
1.1.7Grade No. 4-D-A heavy distillate fuel, or a blend of distillate and residual oil, for use in low- and medium-speed diesel engines in applications involving predominantly constant speed and load.
1.2This specification, unless otherwise provided by agreement between the purchaser and the supplier, prescribes the required properties of diesel fuels at the time and place of delivery.
1.2.1Nothing in this specification shall preclude observance of federal, state, or local regulations which can be more restrictive.
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.