Why is there white milky stuff in my oil?
Why is there white milky stuff in my oil? In most cases the white stuff is moisture. Determining how the moisture got into the engine; will tell you whether this is nothing to worry about or if it's something more serious. Causes can range from, condensation from weather changes to a blown head gasket. What does Milky oil mean in lawn mower? Oil that is a whitish milky color is contaminated with water, while oil that is a greenish milky color contains antifreeze. If the water is the result of normal condensation in the engine, the milky color will disappear...