"Is Your Diesel Putting Your Engine at Risk? The Dangers of Contaminated Diesel"

Economic supply and demand phenomena as well as efforts to make paraffin more affordable to the poor have resulted in a large price difference between diesel and paraffin. Unscrupulous fuel suppliers stand to make large profits by fraudulently diluting diesel with paraffin or simply selling paraffin as diesel. Continuous operation with a substantial proportion of paraffin (possibly 50% or more) will ultimately damage diesel fuel pumps, injectors and diesel engines. The lubricating properties of diesel are critical to the longevity of modern fine-clearance diesel injection systems. Paraffin's lubrication properties are far inferior and cannot be improved with engine oil. Moreover, altered diesel may have inferior ignition properties resulting in burnt valves and overheating.