The importance of using the correct oil, especially in an engine as specialized as that of a Kohler Engine, has demanded that we here at Kohler Engine Replacement Parts talk a little about the necessity of OEM oil. Unlike standard automotive motor oil, the basic differences that can be found in a quart of Kohler Oil are enormous but not at first sight. Like anything else there is more to this labeled and branded oil for the Kohler Engine than meets the eye.