进气阀和排气阀密封有问题也会造成压缩时漏气。
The intake or exhaust valves are not sealing properly, again allowing a leak during compression.
有特别优异的分水性及氧化安定性，热稳定性、抗泡性，不产生积碳，保持排气阀门清洁，延长维修期。
A particularly excellent demulsibility and oxidation stability, thermal stability, anti-foam, no carbon deposit, maintain the exhaust valve cleaning, extended repair period.
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