Exceptional thermal stability and oxidation resistance prevents in-service oil degradation which contributes to filter blocking and sludge formation in the oil galleries, crankcase and valve train.
优异的热稳定性和抗氧化性防止在职石油降解这有助于阻止和污泥过滤器在石油画廊，曲轴箱和阀门列车编组。
2
Certain naturally occurring mineral deposits may adhere to the valve, blocking waterways, rendering it inoperative.
某些自然产生的矿物质沉淀可能附着在阀门上，堵塞水路，造成阀门不起作用。
3
The solenoid plunger pulls the vent valve down, blocking off the passage to the charcoal canister.