It might seem like a small detail, but the color of your engine oil can speak volumes about what’s going on inside your car.

THIS paper describes the background, operation, and results of a series of 50,000-mile low-duty service tests on motor oils. Comparisons of engine cleanliness and wear are presented in oils ranging ...

Motor oil has quietly become one of the most important choices car owners make, especially as vehicles routinely cross 150,000 kilometers and keep going. The debate between full synthetic and high ...