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295、495柴油机的优点已广泛得到肯定，但其缺点是机油消耗多。我队一机台的495柴油机曾达10.5公斤/24小时（9.7克/马力小时），相当于扬州柴油机厂允许最高标准（5克/马力小时）的两倍。一、造成消耗机油过多的原因通过一年多的观察和分析，我们认为有四方面的原因：（一）气门与气门导管的润滑受摇臂机构压力润滑过剩的支配，当气门与导管的配合间隙增大至0.15毫米以后，吸排浪费机油逐步严重，配合间隙不大时则不明显。
The advantages of 295, 495 diesel engines have been widely recognized, but the disadvantage is that they consume more oil. The 495 diesel engine of our team has reached 10.5 kg/24 hours (9.7 grams/horsepower hours), which is equivalent to twice the maximum allowable standard of Yangzhou Diesel Engine Factory (5 grams/horsepower hours). I. Causes of Excessive Consumption of Oil After more than a year of observation and analysis, we believe that there are four reasons: (1) Lubrication of valves and valve guides is governed by excessive pressure lubrication of the rocker arm mechanism, when valves and ducts are used. After the clearance increases to 0.15 mm, the suction and waste of the oil gradually become serious, and when the clearance is small, it is not obvious.