495型柴油机体积小，轻便，操作简单，适于地质部门使用，是我队钻探生产的主要动力设备。但在使用中发现，这种柴油机机油耗量较多，一般每昼夜耗机油7～8公斤，大大超过该机出厂马力小时耗机油4克的规定（一昼夜为4.8公斤），浪费很大。1977年初，我队党委提出了改革节油的战斗任务，依靠群众，迅速攻克了这个关键。 The 495 diesel engine is small in size, light in weight and easy to operate. It is suitable for use in geological departments and is the main power equipment for drilling and production of our team. However, in use, it is found that such diesel engine oil consumption is high, generally 7-8 kilograms of oil per day and night, which greatly exceeds the 4 kilograms of engine oil consumption per hour (4.8 kg per day). At the beginning of 1977, the party committee of our team proposed a combat mission of reform and fuel economy, relying on the masses and rapidly overcoming this key.