Many people may wonder why newly changed engine oil is usually clear in color, but turns black after a while of use. Many people assume that when engine oil turns black, it means that it has deteriorated and needs to be changed immediately. But is this really the case?
The color of the engine oil does not only indicate the quality of the engine oil, but also the operating conditions of the engine. Black engine oil does not always mean that it has deteriorated. It is caused by the engine oil absorbing dirt and soot from combustion inside the engine, causing the engine oil to gradually darken. However, if the engine oil turns black unusually quickly, it may be a sign of internal engine problems, such as worn piston rings or coolant leakage into the engine oil. สล็อต เว็บตรง