Railway locomotive oil additive


After the 1950s, the American Locomotive Maintenance Association (LMOA) and the United States General Electric Company (GE) proposed the classification and main properties of diesel engine oil for diesel locomotives respectively. The development stages of American railroad diesel oil are: the first generation oil was used in 1950, the second generation oil was recommended in 1964, the third generation oil was recommended in 1969, the fourth generation oil was used in 1977, and the fourth generation oil was used in 1982. It has completely replaced the third-generation oil, and the fifth-generation oil was recommended in 1989. In 1990, the United States began to use the fifth-generation oil. The typical characteristics of the fifth generation oil is that the total base number of the oil is greatly improved, the viscosity is increased, and OLOA2990 or Amoco6888 additives are used.

Railway locomotive oil additive

American railway diesel oil is divided into two categories according to whether it contains zinc dialkyldithiophosphate (ZDDP) antioxidant and anticorrosion agent, one is non-zinc oil without ZDDP, which is used for diesel engine superchargers and crank pins Silver-plated locomotives on the bearing surface (such as those produced by General Motors GM); another type of ZDDP-containing zinc-containing oil is used for locomotives without silver bearings.

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