ASTM D975 (Standard Specification for Diesel Fuel Oils)

ASTM D975 is a standard that outlines the specifications for diesel fuel oils used in various engines, including those in vehicles and equipment. It sets criteria for fuel properties such as cleanliness, stability, and performance to ensure safe and effective operation. The standard categorizes diesel fuels based on factors like sulfur content, cetane number (which affects ignition speed), and viscosity. By adhering to ASTM D975, manufacturers and suppliers can ensure that their fuel meets quality requirements, helping to enhance engine performance, reduce emissions, and promote reliability in everyday use.