I have met many drivers who love cleanliness. They hang a plastic bottle at the bottom of the hydraulic oil tank and insert the exhaust pipe of the oil tank into the bottle in order to collect the hydraulic oil brought out during exhaust to avoid flowing to the car and soiling the car body.

这个看起来很不错的举措却给整个液压系统的安全埋下了一个非常大的隐患。

This seemingly good measure has buried a very big hidden danger for the safety of the whole hydraulic system.

排气管会将油箱里的热气排出，在瓶子里凝结成水，平时冲洗水和雨水也会顺着气管流进瓶子里，油箱冷却时会将水分通过排气管倒吸进油箱。参进水分的液压油很快就会变质，成为乳白色，通常被称为油液乳化。

The exhaust pipe will discharge the hot gas in the oil tank and condense into water in the bottle. Usually, the flushing water and rainwater will also flow into the bottle along the air pipe. When the oil tank is cooled, the water will be sucked back into the oil tank through the exhaust pipe. The hydraulic oil with water will soon deteriorate into milky white, which is usually called oil emulsion.

乳化后的液压油润滑性能和压缩性能会严重下降，引起一系列的问题，轻则泵马达内泄工作无力，各胶圈和油封磨损漏油。泵轴端油封漏油，控制阀胶圈磨损漏油，重则会使液压泵和马达柱塞滑靴和配油盘磨损甚至报废。

The lubricating performance and compression performance of emulsified hydraulic oil will be seriously reduced, resulting in a series of problems. At least, the internal leakage of pump Mada is weak, and each rubber ring and oil seal are worn and leaked. The oil seal at the pump shaft end leaks oil, the rubber ring of the control valve is worn and leaks oil, which will seriously wear and even scrap the plunger slippers and oil distribution discs of the hydraulic pump and motor.

泵内部严重磨损更好的解决办法就是将排气管垂直伸到车底下，让排出的油自然滴到地上。不要将排气管打结和缠绕。还挂着水瓶的朋友们，赶紧把瓶子去掉吧！

A better solution to the serious wear inside the pump is to extend the exhaust pipe vertically under the car and let the discharged oil drip naturally to the ground. Do not knot or wind the exhaust pipe. Friends who are still hanging water bottles, please remove the bottles quickly!

好在现在的散热器都进行了改良，在油箱侧面加装了一个油液回收盒，可以有效解决污染的问题，盒子容量有限，大伙可要记得经常检擦，及时将里面积存的油放掉，尤其是新车刚使用和换完油后的几天是更容易溢油的。

Fortunately, the current radiators have been improved. An oil recovery box has been installed on the side of the oil tank, which can effectively solve the problem of pollution. The box capacity is limited. Everyone should remember to check and wipe it frequently and drain the accumulated oil in time, especially in the days after the new car is used and replaced.