Is there a "good oil"
Power and fuel saving?
For example, No. 95 gasoline is better than No. 92 gasoline
Is this really the case?
What is the difference between 92, 95 and 98 gasoline?
The higher the gasoline label, the more resistant it is to burn?
The answer, of course, is no
We just need to refuel according to the car's factory instructions
There is no need to deliberately increase the number of gasoline
Can I save money with high-grade gasoline?
In daily life, the use of gasoline with two different labels of No. 92 and No. 95 does not have much impact on average fuel consumption.
Many experimental platforms have proved through actual tests that the final fuel consumption data using No. 92 and No. 95 differs by only about 0.1 liters/100 km, and the unit price of No. 95 gasoline is more expensive than No. 92 gasoline. Therefore, from a comprehensive point of view, "high-grade gasoline fuel saving" is a false proposition.
In addition to fuel consumption, using the same value of No. 92 gasoline and No. 95 gasoline respectively, the distance of running will not be too different. Of course, under certain conditions, the use of No. 95 gasoline is more fuel-efficient than No. 92 gasoline, but the fuel-saving effect is very limited.
No. 92, 95, 98 is only a gasoline label, representing the explosion resistance, the larger the number means that the better the explosion resistance, and the quality of the gasoline itself has nothing to do with it, not that the higher the number of gasoline, the better the quality, the less impurities.
What is the difference between No. 92, No. 95, no. 98 gasoline?
Let's take a look at what Gasoline 92, 95, and 98 looks like.
From left to right, they are No. 92 gasoline, No. 95 gasoline, and No. 98 gasoline
From the outside, they don't have a big gap.
Let's talk about the inner ~
Domestic gasoline number is divided according to China's vehicle gasoline standards, No. 92 and No. 95, No. 98 gasoline in terms of oil and cleanliness are the same, the biggest difference is their octane number.
The knock resistance of No. 98 gasoline is higher than that of No. 95 No. 92 gasoline. This is designed to accommodate different compression ratio engines with different knock value requirements.
Theoretical data on gasoline octane numbers
Understanding the meaning of the gasoline label, let's explore a saying that is widely circulated in the current public opinion field: the high-grade gasoline is powerful enough, and it can also extend the life of the engine. Speaking of which, let's popularize the second concept: compression ratio.
Compression ratio is a very important structural parameter of the engine, which represents the ratio of the gas volume at the beginning of the compression of the piston at the lower stop point to the gas volume at the end of the compression of the piston at the upper stop point, and the compression ratio of the engine determines the height of the fuel label.
In short, what car adds what oil is determined by the compression ratio of the car engine.
Therefore, for engines with different compression ratios, the fuel label selection is different, the engine with high compression ratio should choose high grade gasoline, and the gasoline label of the low compression ratio engine can be appropriately reduced.
High-grade gasoline vehicles
What happens if you mix low-grade gasoline?
If the car filled with No. 95 gasoline is mistakenly added No. 92 gasoline, it will produce a lack of knocking when driving at high speeds, the failure rate will increase when the engine is working, and the fuel consumption will rise, carbon deposits will increase, and the fuel injector will be blocked.
Knocking will lead to weaker power, increased fuel consumption, increased wear of various parts of the cylinder, shortened life, and even lead to engine damage and scrapping.
Finally, a reminder
Be sure to refuel at a regular gas station
Choose the gasoline label that suits your car
Text: District Market Supervision Bureau
EDIT: Liang Xing
Please indicate that it is from the official WeChat of Minhang today