沃尔沃汽车发动机重要的油液就是机油，一般全合成的机油寿命在一万，但是即使是放着不用，只要接触空气了，机油就会氧化并逐渐变质，更何况发动机工作时会面临各种各样复杂的工况。那如何延缓机油劣化变质，保证使用性能？济南沃尔沃汽车专修厂家为你解答。

The important oil of Volvo Cars' engines is engine oil. Generally, the life of fully synthetic engine oil is 10000 km. However, even if it is left unused, as long as it contacts with air, the engine oil will be oxidized and gradually deteriorate, and the engine will face various complex working conditions. How to delay the deterioration of engine oil and ensure its performance? The specialized manufacturer of Volvo Cars in Jinan will answer for you.

一.定期更换机油滤芯

1、 Replace the oil filter element regularly

机油滤芯的主要作用是过滤机油中的杂质、污垢，为发动机提供清洁的润滑油，保持油路畅通。但是机油滤芯也有使用期限，长期不换会影响过滤性能，当杂质过多而无法得到有效过滤时，机油会加速劣化变质，性能大打折扣。

The main function of the engine oil filter element is to filter impurities and dirt in the engine oil, provide clean lubricating oil for the engine, and keep the oil path smooth. However, the engine oil filter element also has a service life. If it is not replaced for a long time, the filtering performance will be affected. When there are too many impurities and it cannot be filtered effectively, the engine oil will deteriorate rapidly and the performance will be greatly reduced.

二.定期清洁润滑系统

2、 Clean the lubrication system regularly

无论是重力放油还是抽油机抽油，都无法完全将旧机油放干净，油底壳中一定会有油泥和氧化了的旧机油残留。残留的旧机油又会污染新机油，加速新机油劣化变质，缩短新机油的使用寿命。

Neither gravity drainage nor pumping unit can completely drain the old engine oil, and there must be sludge and oxidized old engine oil residues in the oil pan. The residual old engine oil will pollute the new engine oil, accelerate the deterioration of the new engine oil, and shorten the service life of the new engine oil.

因此，每隔一段时间需定期清洁润滑系统，去除残留的沉积物和旧机油。

Therefore, the lubrication system should be cleaned regularly at regular intervals to remove residual deposits and old oil.

可以在换油前将发动机清洁剂加入旧机油中，怠速10-15分钟后放出即可有效溶解掉发动机内部油泥等沉积物，使旧机油排出更好，减少对新机油的污染。

The engine cleaner can be added to the old engine oil before changing the oil. After idling for 10-15 minutes, it can effectively dissolve the sludge and other deposits inside the engine, so that the old engine oil can be discharged better and the pollution to the new engine oil can be reduced.

三.选择高品质机油

3、 Select high quality oil

三个指标直接决定机油的劣化变质速度：清洁分散性、抗氧化性、总碱值。

Three indexes directly determine the deterioration rate of engine oil: clean dispersibility, oxidation resistance and TBN.

清洁分散性：机油在高温高压状态下会生成各种氧化产物，这些氧化产物会与零部件磨损产生的金属粉末混合在一起，变成沉积物。沉积物量少时会在机油中悬浮，量大时就会从机油中析出，堵塞滤清器和油孔、阻碍机油的正常流动。如果你选购的机油清洁分散性够强，就能主动溶解、分散沉积物，避免堵塞，在整个使用周期内保证机油的正常性能。

Cleanliness and dispersibility: under high temperature and pressure, the engine oil will generate various oxidation products, which will be mixed with the metal powder produced by parts wear and become sediment. When the amount of sediment is small, it will be suspended in the engine oil. When the amount is large, it will be separated from the engine oil, blocking the filter and oil hole, and blocking the normal flow of engine oil. If the oil you choose is clean and dispersive enough, it can actively dissolve and disperse the sediment to avoid clogging and ensure the normal performance of the oil throughout the service life.

抗氧化性：发动机内部的高温会使机油迅速氧化，氧化后的机油各项性能都会下降，氧化到一定程度后即需更换。而抗氧化性能更强的机油可以有效抑制机油的氧化进程，实现更长的换油周期。

Oxidation resistance: The high temperature inside the engine will rapidly oxidize the engine oil, and the performance of the oxidized engine oil will decline. The engine oil needs to be replaced when it is oxidized to a certain extent. The engine oil with stronger oxidation resistance can effectively inhibit the oxidation process of engine oil and achieve a longer oil change cycle.

总碱值：燃油燃烧时产生的酸性物质和气体会融入机油，导致机油酸化，使机油的各项性能迅速衰减，加速机油劣化变质。我国燃油中的含硫量很高，机油酸化速度更快，因此选择总碱值更高的机油可以更好地中和机油中的酸性物质，延缓机油酸化变质的速度。

TBN: Acids and gases generated during fuel combustion will melt into the engine oil, causing the engine oil to be acidified, rapidly reducing the performance of the engine oil, and accelerating the deterioration of the engine oil. In our country, the sulfur content in the fuel is very high, and the speed of oil acidification is faster. Therefore, selecting the oil with higher TBN can better neutralize the acid substances in the oil, and delay the speed of oil acidification.

此外发动机频繁启停、走走停停，机油也会因为油温太低而产生较多的低温油泥沉积，促进机油的劣化变质。长此以往，机油固有的油膜特性会逐渐失效，机油润滑性能变差甚会完全丧失润滑功能。所以做好相关的工作非常关键，您有需求就来我们网站http://www.lutongqixiu.com咨询了解吧！

In addition, if the engine starts and stops frequently, the engine oil will also produce more low-temperature sludge deposits due to the low oil temperature, which will promote the deterioration of the engine oil. In the long run, the inherent oil film characteristics of the engine oil will gradually become invalid, and the lubricating performance of the engine oil will become worse or even completely lose its lubricating function. So it is very important to do a good job in related work. Come to our website if you need http://www.lutongqixiu.com Ask and understand!