Petro-Canada DURON HP 15W40 provides the industry's best protection against wear that can reduce performance and improve fuel economy. This oil has been specifically formulated to exceed the requirements of ACEA E6, E7 and E9 specifications as well as API CK-4, CJ-4 and previous categories. DURON HP 15W-40 not only exceeds ACEA E9 and API CK-4 requirements, but also performs well in all weather conditions, including consistently strong cold starts and exceptional shear stability. This reduces engine wear and reduces oil consumption.