The solution: you should use lower viscosity of the oil when the temperatuer. And every engine shoule be equipped with preheating device, should preheat several times before ignion.
解决办法：在气温较低时，应使用粘稠度低一点的机油。还有就是每台发动机都配有预热装置，打火之前应多预热几次。
Park automobile on the flat and level road, and then start engine to preheat engine oil.
将车辆停放在平坦和水平路面上，然后起动发动机以预热机油。
Park automobile on the flat and level road, and then start engine to preheat engine oil.
将车辆停放在平坦和水平路面上，然后起动发动机以预热机油。
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