Why is my motor oil yellow?

Yellow motor oil can indicate the presence of contaminants, such as coolant, or it may be a sign of oil emulsification due to moisture. If the yellow color is accompanied by a milky appearance or a noticeable change in texture, it could suggest a coolant leak, potentially leading to engine damage. It's advisable to have the oil and engine checked by a professional to diagnose and address any underlying issues. Regular oil changes and checks can help prevent such problems.