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i have to disagree entirely.....the chemistry of a diesel-specific motor oil has nothing to do with the chemistry requirements of a gasoline engine.
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Don't want to start another oil thread war but always look at the API service rating on the oil and MB oil approvals. For instance, Mobil Delvac 15W-40 1300 Super, a so called "diesel oil", also has an API service rating of SM which is specified for MY 2010 and older gasoline engines. HD oils of this type typically have higher high temperature high shear viscosity and temperature stability and more anti-wear agents (zinc) which significantly reduce sliding wear on camshafts that do not have roller lifters. These HD oils are a good choice for older MB diesel and gasoline fueled fleets where synthetic oil is not specified. Mark