Will the engine oil be damaged if the oil is not cleaned when changing the oil?

When we usually do maintenance and change the oil, the auto repair shop usually lifts the car with a lift to drain the old oil and change the new oil.

However, many car owners find that some oil will be left after each maintenance. What is going on? Did the auto repair shop drain the engine oil? How to use the remaining new engine oil? How can we make this extra engine oil play its value?

How does the engine work? Working principle of variable valve

The camshaft is a component in a piston engine. Its role is to control the opening and closing actions of the valve. Driven by the crankshaft, the camshaft continuously rotates, and the cam continuously presses the valve (rocker arm or ejector rod), thereby realizing the function of controlling the opening and closing of the intake valve and the exhaust valve.

Does the automatic engine start and stop function save fuel or ruin the car?

The engine automatic start-stop technology actually appeared in the 1930s, but it was not widely used in traditional cars until the mid-1980s. In 1984, the automatic start-stop technology was first applied to Volkswagen Golf diesel engines. Subsequently, many car brands have a strong interest in the technology, and began to trial install the system in small batches, such as Fiat Mazda, Honda, Citroen, GM and so on. In 2007, this technology began to be applied in large quantities on BMW models.

Open the engine cover, you can also do these vehicle detection, it is recommended to collect!

Many car owners find that the car is a bit wrong and like to open the engine cover (also called the engine compartment cover), “check” some, but in fact many car owners do not understand the structure of the engine compartment, some car owners do not even open it, When it finally opened, I looked at it a little bit at a loss. The following will tell the majority of car owners, after opening the engine cover, what tests can you do?

The three most bad habits that damage the engine, even the best imported cars, even one year after driving

 

The appearance of a new car does not have to look good, but the limbs must be sound. The heart is not as strong as it is, but the blood must be fresh enough. Everyone knows that blood is engine oil and the engine is the heart of the car. The engine must be regularly repaired and maintained in time. However, many car clubs add some fully synthetic engine oil or mix various engine oils. what’s the situation.

The gentler the car, the better the car? Actually you have always been wrong

 

Many people often hear a piece of advice after buying a car, that is to drive slowly. The advice here actually tells us to pay attention to safety, but some people are really brainless and drive very slowly, even comparable to some electric cars. I also feel that this is a safe driving habit and good for cars. But is this really the case?