[Maintenance of a car every day] How harmful is the excessive amount of oil refilling? You can’t stand these three points!
BobGrace 
8 Hello everyone, this is a column focusing on car repair and maintenance. There are car secrets you don’t know here, and it will teach you how to avoid big pits on the road to car maintenance. I believe that not only you, but also many people have a certain hazy feeling about the automotive aftermarket. Here will help you uncover the unknown stories of car repair and maintenance.
All cars are inseparable from maintenance, and changing oil is a common maintenance item. Many people will find a problem when maintaining their cars, that is, maintenance technicians have extremely strict control over the amount of oil added. If you accidentally add more oil, you will directly release the extra oil until it is suitable.
This issue of Xiaobian will give you an in-depth interpretation: Why can’t you add more oil?
Nowadays, engine oil is filled directly through the filler port on the engine. After the oil is released, it can be filled directly.
Why can’t I add more oil?
There are many reasons why you cannot add more oil, mainly in the following three aspects.
1 Oil leakage
As the oil increases, the oil vapor will also increase, and the pressure inside the entire engine will increase. It doesn’t matter if the pressure rises. The scariest thing is that all seals will not stand it. Over time, oil leaks will begin to occur at various joints of the engine.
Oil leaks are really everywhere. This Subaru engine leaks at the junction of the timing housing.
2 Power drops
The oil pan shell is responsible for storing oil. When the amount of oil is large, the resistance to engine operation will increase significantly.
The crankshaft is responsible for power output. Imagine a crankshaft rolling in engine oil. How can the resistance not increase?
3 Three-way catalyst damage
There is a certain consumption of oil itself. As the amount of oil increases, the consumption will also increase. Some impurities in the engine oil will be discharged along with the exhaust gas and will adhere to the three-way catalyst when it passes through the three-way catalyst. Over time, the three-way catalyst will be blocked, and more seriously, the three-way catalyst will be directly scrapped.
The ceramic carrier inside the three-way catalyst is very sensitive to carbon deposition and needs to be removed once it is blocked. If the oil produces too much sulfides, it will also cause irreparable damage to Sanyuan.
2. How much oil is appropriate to fill?
Each car has its own way of checking oil, and most models are equipped with oil dipsticks. When checking the oil, make sure that the engine is in a stalled state and that the stalled time exceeds two minutes. The oil should be between the upper and lower limits, not too low or too high.
Some high-end models omit the traditional oil dipstick and use an electronic oil dipstick on the central instrument to display the amount of oil.
Seeing that now do you understand the dangers of adding more oil, and whether there are many results that you could not expect. A car is a relatively complex industrial product and must be operated strictly in accordance with the requirements, otherwise it is likely to cause certain damage to the car. However, he had to spend money to repair the car, which was a bit more than the gain.
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