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1.1 This specification covers seven grades of diesel fuel oils suitable for various types of diesel engines. These grades are described as follows:
1.1.1 Grade No. 1-D S158212;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.
1.1.2 Grade No. 1-D S5008212;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.
1.1.3 Grade No. 1-D S50008212;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.
1.1.4 Grade No. 2-D S158212;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.
1.1.5 Grade No. 2-D S5008212;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.
1.1.6 Grade No. 2-D S50008212;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.
1.1.7 Grade No. 4-D8212;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.
Note 18212;A more detailed description of the grades of diesel fuel oils is given in X1.2.
Note 28212;The Sxxx designation has been adopted to distinguish grades by sulfur rather than using words such as x201C;Low Sulfurx201D; as previously because the number of sulfur grades is growing and the word descriptions were thought to be not precise. S5000 grades correspond to the so-called x201C;regularx201D; sulfur grades, the previous No. 1-D and No. 2-D. S500 grades correspond to the previous x201C;Low Sulfurx201D; grades. S15 grades were not in the previous grade system and are commonly referred to as x201C;Ultra-Low Sulfurx201D; grades or ULSD.
1.2 This 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.
1.2.1 Nothing in this specification shall preclude observance of federal, state, or local regulations which can be more restrictive.
Note 38212;The generation and dissipation of static electricity can create problems in the handling of distillate diesel fuel oils. For more information on the subject, see Gui......
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