Car refueling should choose what label car refueling oil number the higher the better

When we pass by the gas station, we will find that each tanker will be marked with 92#, 93#, 95# and so on. This is the label of gasoline, and the gasoline with different labels is also different. So what kind of oil to choose for the car? Don't be afraid of difficulty in choosing a difficult disease, because the choice of oil number is exquisite. Let's get to know!

What label should be chosen for car refueling

Numbers 92, 95 and 98 are the three fuel numbers we usually see at gas stations.

In general, the car owner's manual, as well as the fuel tank cover will be labeled with the recommended number of gasoline to fill up. It is best to refuel in accordance with the oil number marked on the cover, which is the most suitable for the vehicle engine.

But don't fill it with a lower fuel grade than recommended. For example, the recommendation to add 95 gasoline, do not add 92 gasoline.

Is it better to fill your car with a higher fuel number

Common auto oil number 92, 95, 98 three kinds of gasoline, these three differences are knock resistance and octane number. The largest oil number, the most knock resistant, so 98 is the most knock resistant.

So what is knock?

Usually, when a mixture of oil and air enters the engine, the piston compresses them, and the spark plug reignites the high-pressure mixture. The energy from their combustion and explosion is converted into the energy needed to run the engine. But because of friction and heating, sometimes these mixtures do not need a spark plug. This abnormal spontaneous combustion is called detonation.

If you blindly choose the oil with the highest oil number, the life of the engine will be affected for a long time. Some of the more expensive cars because the engine has a higher compression ratio, strong power, the engine combustion quality requirements are higher. So you need a higher grade of oil.

What's the best amount to fill up the car

Urban refueling is easy to add half or two-thirds, refueling is not convenient to add a jump gun. Because the general tank jump gun is only about 95% of the tank. But do not see the bottom before refueling, easy to hurt the pump. Fill up the tank if the car is on a long run; If you drive in urban areas for a long time, you can fill up to 6 or 7 layers each time when refueling is convenient.

Don't wait until the tank is almost empty. Fill it up when the tank is about a quarter empty.