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Lubricants are gradually contaminated with moisture and mechanical impurities during use. Even without the presence of metals and other catalysts, pure liquid water promotes oxidation of the oil. However, in actual use, the lubricant is always in contact with the metal. After water is contained in the oil, the oxidation of the oil is actually [...]

Since the 1990s, the rise in the price of petroleum crude oil has risen, driving the price of all petroleum products in the world to rise, first of all, the rise in fuel prices. Moreover, due to the world's demand for energy, with the rapid development of the world economy, China's rise has made the [...]