Over time, the performance of lubricating oil will become worse and worse, which will have a serious impact on the engine, such as the rapid growth of sediment engine, the decline of dynamic performance, early wear parts, and finally lead to failure. In order to ensure the long-term normal operation of the engine and reduce the wear, the lubricating oil must be changed in time according to the regulations. How to judge whether the oil is bad?

　　1.光照法

　　1. illumination method

　　在晴朗的日子里，用螺絲刀把油以45度角提起水面。比較陽光下，觀察油滴的情況，在光線下，可以清楚地看到沒有磨屑的潤滑油是好的，可以繼續使用，如果磨屑太多，應更換潤滑油。

　　On a clear day, use a screwdriver to lift the oil at a 45 degree angle to the surface of the water. Under the sunlight, observe the oil drop. Under the light, it can be clearly seen that the lubricating oil without debris is good and can be used continuously. If there are too many debris, replace the lubricating oil.

　　2.油流觀察法

　　2. Oil flow observation

　　拿兩個杯子,其中一個需要檢查潤滑油,空在桌面上,另將裝滿潤滑油量杯離開桌面30 - 40厘米高,瘦,讓油流動緩慢的空杯,觀察流情況下,當優質潤滑油流動應該是又細又長,制服,連續的,如果出現石油流快和慢,有時大流動,潤滑油已經惡化。

　　Take two cups, one of which needs to check the lubricating oil, empty on the table top, and another empty cup filled with lubricating oil that is 30-40cm high and thin from the table top, making the oil flow slowly. When observing the flow, when the high-quality lubricating oil flow should be thin and long, uniform and continuous, if the oil flow is fast and slow, sometimes large flow, the lubricating oil has deteriorated.

　　3.油滴痕跡法

　　3. Oil drop trace method

　　拿一塊干凈的白濾紙,滴幾滴油在濾紙上,等待石油泄漏,如果有黑色粉末表面接觸電阻的手有一種感覺,它表明有很多雜質在石油,石油沒有奔馳汽車維修商店好粉,用手觸摸干燥光滑,和黃色的標志。

　　Take a clean white filter paper, drop a few drops of oil on the filter paper, and wait for the oil to leak. If there is a feeling that the black powder surface contacts the resistance hand, it indicates that there are many impurities in the oil. The oil is not as good as the Benz car repair shop. Touch the dry, smooth and yellow signs with your hand.

　　汽車潤滑油在保養中使用的頻率非常高，高質量的潤滑油不僅可以保護發動機，減少磨損，還可以減少機油的更換次數，從而降低潤滑油的成本。

　　The frequency of automobile lubricating oil used in maintenance is very high. High quality lubricating oil can not only protect the engine, reduce wear, but also reduce the number of oil changes, thus reducing the cost of lubricating oil.

　　濟南哪里修奧迪比較，我們公司維修奧迪，奔馳，歡迎來店維修保養。

　　Jinan where repair Audi is more professional, our company professional repair Audi, Mercedes Benz, welcome to the shop repair and maintenance.