Valvoline said Premium Blue Extreme meets all requirements for the API CI-4 performance classification, as well as the Cummins CES 20078 standard. It is formulated to maintain extended drain intervals, up to 100,000 miles, in select engines under certain operating conditions, the company said.
Valvoline added that Premium Blue Extreme is endorsed and recommended by engine maker Cummins and has been extensively tested by Cummins in 2002 cooled exhaust gas recirculation (EGR) engines in the lab and on the road.