Petro-Canada Lubricants’ new Duron GEO LD product line, with both SAE 15W-40 and SAE 10W-30 viscosity grades, is API CK-4 licensed and approved for the latest Cummins mobile natural gas engine oil specification CES 20092 and back-serviceable to Cummins CES 20085. The engine oil is robust and formulated to safely extend oil drain intervals while providing all-weather performance and advanced engine protection, the company says. The product is approved by major diesel engine OEMs such as Cummins, Detroit Diesel, Mack and Volvo, and offer a complete solution for mixed fleets that include mobile natural gas engines, according to Petro-Canada. Web: www.lubricants.petro-canada.com