If you want to change the gasoline label, you can actually change it directly. However, if low-grade gasoline is used instead of high-grade gasoline, it is best to use the oil in the mailbox until the oil gauge light is on, that is, the oil gauge pointer is in the red area. There is nothing else to pay attention to, just refuel directly. And it's best to fix a label in the future, and don't change it everywhere.
It should be noted that the label of the added gasoline should conform to the label specified by the manufacturer. The label of gasoline only represents a parameter of gasoline antiknock agent. The higher the label, the better the antiknock performance, regardless of purity. The antiknock performance of gasoline has a certain relationship with engine operation. The compression ratio of domestic automobile engines is generally low, and 95 # gasoline with low antiknock performance is used.
Development history:
/kloc-in the 0/9th century, people didn't realize the importance of gasoline. At that time, kerosene was widely used for lighting. At that time, petroleum refining relied on a simple distillation process to separate components with different boiling points from petroleum. Kerosene has a high boiling point and is safe to use when igniting. It has become the main product of crude oil refining, while gasoline and other components are usually burned as fuel.
/kloc-in the middle and late 9th century, internal combustion engines using gasoline were successfully manufactured, and 1886 gasoline engines were successfully used as vehicle power. Therefore, the importance of gasoline is increasing day by day. But only 20% gasoline can be extracted from crude oil by distillation. 19 1 1 year, American standard oil company solved the problem of low gasoline production.
By using the thermal cracking process invented by William Burton and Robert Humphrey, heavy gas oil is thermally cracked into light gasoline and other fractions, thus improving the gasoline yield as a whole. The thermal cracking process was authorized by American patent in 19 13. The subsequent catalytic cracking process further improved the gasoline yield and higher octane number than the thermal cracking process.