Why must the oil in vehicle be changed?
Oil oxidation
Oil reacts with the oxygen in the air and coupled with a high temperature, this oxidation process is accelerated. A temperature increase of 10 - 20 degree doubles the reaction speed. The oil becomes more aggressive from the point of view of corrosion, the lubricating effect deteriorates, and the oil gradually becomes darker and thicker. Reclaimed oil, sometimes sold as so-called low price oil, often contains oxidized base oils and for reasons of corrosion should not be used. Corrosion often works in conjunction with wear, and water in the oil makes the situation even worse.
