ASTM D4814-25a

Detail information

Designation: ASTM D4814-25a

Publication date: 15/12/2025

Pages: 36

Country: American technical standard

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Anotation

This specification describes the various characteristics and requirements of automotive fuels for use over a wide range of operating conditions in ground vehicles equipped with spark-ignition engines. It provides for a variation of the volatility and water tolerance of automotive fuel in accordance with seasonal climatic changes at the locality where the fuel is used. This specification neither necessarily includes all types of fuels that are satisfactory for automotive vehicles, nor necessarily excludes fuels that can perform unsatisfactorily under certain operating conditions or in certain equipment. The spark-ignition engine fuels covered here are gasoline and its blends with oxygenates, such as alcohols and ethers, and not fuels that contain an oxygenate as the primary component, such as fuel methanol (M85). This specification does not address the emission characteristics of reformulated spark-ignition engine fuel. However, in addition to the legal requirements, reformulated spark-ignition engine fuel should meet the performance requirements as well.


Keywords:
alcohol, antiknock index, automotive fuel, automotive gasoline, automotive spark-ignition engine fuel, copper strip corrosion, corrosion, distillation, driveability, Driveability Index, EPA regulations, ethanol, ether, fuel, gasoline, gasoline-alcohol blend, gasoline-ethanol blend, gasoline-ether blend, gasoline-oxygenate blend, induction period, lead, manganese, methanol, MTBE, octane number, octane requirement, oxidation stability, oxygenate, oxygenate detection, phase separation, phosphorous