柴油机气缸的缸盖缸垫表面不宜涂黄油黄油在柴油机上广泛使用．它在金属表面有较好粘附作用，但滥用则将会产生不良后果。（１）柴油机干式缸套涂黄油，会导致柴油机过热，影响正常工作．原因在于发动机工作升温到正常温度时，缸套会受热膨胀，而缸体座孔因受冷却水作用温... Diesel cylinder head cylinder head gasket surface should not be coated butter butter is widely used in diesel engines. It has a good adhesion on the metal surface, but abuse will have adverse consequences. (1) Diesel dry cylinder liner coated with butter, can cause overheating diesel engine, affecting normal work. The reason is that when the temperature of the engine is raised to normal temperature, the cylinder liner will be heated and expanded, while the cylinder seat hole will be warmed by the cooling water ...