"My engine oil is so dark?"
Why is my engine oil not black?"
"Whether the engine oil is black or not, tell me!"
When changing engine oil, I often like to see whether the engine oil is black or not. In fact, this is not a scientific identification method. The oil maintenance ability is determined by the oil viscosity, and the oil black indicates that the cleaning ability is strong.
And why is the engine oil black? Let's look down ↓ ↓ ↓ ↓
1: when changing oil, the oil filter is not replaced, also known as "oil filter", which is also called "machine filter" in our daily life ". It is used to remove dust, metal particles, carbon deposits, soot particles and other impurities in the engine oil and protect the engine. The function of the machine filter itself determines that it must be a dirty "guy". After using the machine filter for a period of time, there will be objects such as sludge and metal particles. If the machine filter is not changed when changing the oil, the dirty machine filter will soon dye the new machine oil black.
Therefore, it is better to change the machine filter when changing the engine oil, which can not only ensure that the machine filter plays the role of filter oil, but also prolong the service life of the new engine oil.
2: poor fuel quality
When we add the fuel with poor quality, the olefin content in gasoline is high, then the oil sludge is easy to form in gasoline engine; The sulfur content in diesel engine is high, then the smoke is easy to form in diesel engine. The product of incomplete combustion directly causes the engine oil to turn black. The most typical thing is that when the tractor drove past us quickly, was the black smoke impressive?
Therefore, if you choose to refuel at the big gas station that guarantees the quality, the car power and engine life will be better.
3: driving road conditions cause the engine to fail to run at normal revolutions for a long time. For example, when driving, it is easy to cause insufficient fuel combustion, oil sludge is easily generated in gasoline, and smoke is easily formed in diesel, this causes the engine oil to turn black.
Therefore, if you drive in the City Section for a long time, it is easy to cause insufficient fuel combustion, and the mileage of Oil Change can be appropriately shortened.
4: poor engine maintenance
The engine is overloaded and operated at high temperature for a long time, and the engine and oil pan are not cleaned when the car changes oil, as well as the poor filtering effect of the oil filter, which will accelerate the blackening of the oil.
Therefore, every time you change the engine oil, in addition to changing the filter, you can use the engine cleaning protective agent to clean the engine, and then replace the quality-guaranteed engine oil.
5: good cleanliness of engine oil the engine oil not only plays the role of lubrication in the engine, but also plays the role of cleaning the engine. Therefore, if you choose genuine goods engine oil, the quality of the engine oil can be guaranteed. Generally, the total synthetic engine oil is relatively clean.
Therefore, many car owners think that the higher the engine oil, the less likely it is to be black. Of course, it is not advisable to pursue oil black blindly as long as the purchase is guaranteed to be genuine goods and the quality is guaranteed. As for black and not black, it depends on whether the engine is dirty or not.
I believe that after reading the above reasons for blackening the engine oil, you will not worry too much about the blackening of the engine oil. Make sure that the products provided by the purchase channel are genuine goods. You can use the right engine oil model at ease.
