Low sulfated .ash and fuel economy DL-1/C20W-30 diesel engine oil was developed to meet PM regulation in Euro5 and CO2 140g/km. The trilemma of high detergency, low sulfated ash, and fuel economy were achieved in the higher dimension in this development, and 2% fuel economy improvement and 3g/km CO2 reduction were achieved while corresponding to Diesel Particulate Filter.
