二为加油站供售之机油(Service Station Oil)，通常是轿车、小型车、计程车等所用之机油，而这些车辆大都以汽油为燃料，此即为汽油发动机机油，以S字头来代表。
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Long service life of diesel engines in pump station determines the availability and maintainability of the engine, the pipeline safe operation as well as the realization of oil transport targets.
输油泵站柴油机组使用寿命的长短，不但影响着机组的利用率和维护保养费用，而且影响着管道的安全运行和输送任务的完成。
Because of the distributing of service station is dispersed, the traditional way of readjusting the price is difficult to adapt to the oil retail market that fluctuates frequently.
由于加油站地域分布的分散性，使得传统的调价方式难以适应当前油品零售市场油价频繁波动的状况。
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