Nozzle: Connect the oil tank and supply the fuel to engine.
③—进油嘴，与油箱连接后给引擎供给燃油；
Additional, in "MARPOL Reg 12a" the demand of Double Hull Protection for fuel oil tank, increases the difficulty of structure design for engine room.
加之MARPOL 12 A条款要求对燃油舱设置双壳保护，给机舱的结构设计增加了难度。
Before changing the oil and filter, add this product into the oil tank, and start the engine idling for about 3 minutes;
在更换机油及过滤器前，将本品加入机油室内，并使发动机怠速空转3分钟；
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