HOW FUEL COMPOSITION AFFECTS DIESEL DEPOSITS AND WEAR

Twenty thousand hours of testing in six automotive diesels show how sulfur content, aromatics content, and average boiling point of the fuel affects deposits and wear. Sulfur tends to increase deposits and wear throughout these engines over a wide range of operating conditions. Higher aromatics contents and average boiling points increase deposits at specific points in the engines but have little effect on wear. However, the magnitude of these effects differs so much with engine design and type of operation that generalizations are unwise. The best fuel composition for any given situation can only be determined by studying the specific conditions to be met.