The car is only 100,000, or to add No. 95 oil, not necessarily the car is too delicate or we want to treat it better, it is likely that the engine performance itself has this demand, depending on the situation.
What label oil to use, depends on the engine demand
The price of the car is not directly related to the gasoline label
First of all, what kind of gasoline is used and the price of the car is not directly related to the price of expensive and cheap.
For example, 100,000 Volkswagen turbines and Lynk & Co cars are basically recommended or required to add No. 95 oil.
On the contrary, some more expensive cars only ask for an additional 92. For example, more than 600,000 Lincoln flying home V6 engines actually only need to add No. 92 oil.
Another example: more than 3 million George Patton tanks also need to add No. 92 fuel.
Gasoline labels depend on engine demand
In fact, the level of gasoline labeling is mainly determined by the needs of the engine design.
This demand includes several aspects such as power, fuel economy and technicality.
Take the power to speak of good, Shen Yitao and others in the journal "Internal Combustion Engine Engineering" published a paper, "The effect of octane number on the performance of gasoline engines", said above.
In the low to medium speed range of 2000 to 4000 rpm, the higher the octane number, the better the knock suppression effect, the earlier the ignition advance angle, the greater the combustion capacitance and thermal efficiency, the greater the output torque of the engine.
The experimental data is as follows: compared with No. 90 gasoline, the torque increase of No. 93 gasoline at medium and low speeds is 1% to 2%, and the increase of No. 97 gasoline is 4.6%.
Because the paper is relatively early, now 97 has become 95.
To put it bluntly: high-grade gasoline is conducive to improving the torque output of the engine in the low-speed range, or the higher the low-speed torque output of the car, the more likely it is that the manufacturer is marked to need No. 95 gasoline.
In fact, it can be seen from the actual example that the Volkswagen EA211 1.4T engine has a horsepower of only 150 horses, which is not at all comparable to the 177 horses of the 10th-generation Civic L15B8 engine.
However, the EA211 can output a maximum torque of 250 N·m at 1750 rpm, and the L15B8 has only 220 N·m at 1700 rpm.
Volkswagen's engine is indeed recommended to add 95 gasoline, honda just that 92 on the line.
Another example: Maribao XL, the 1.5T engine can output a maximum torque of 250 N·m at 1700 to 4400 rpm, but the 2.0T larger displacement turbine can output a maximum torque of 350 N·m at 1500 to 4000 rpm.
Take the example just now, in fact, the 2.0T engine with low torque and stronger is 95, and 1.5T, 92 can be.
Be sure to add 95, is not the engine technology poor
Some friends may ask: "These 100,000 cars must add 95, is it poor engine technology, relying on us to spend more money and make up for it with better oil?" ”
This argument is not necessarily entirely defensible.
In addition to the problem of engine demand just mentioned, it is more critical because these cars were originally designed to be developed according to 95 and above oil products.
For example: some of Volkswagen's turbo cars recommend adding 95, Lynk & Co, Borgward directly said to add 95, these engines are basically designed by European manufacturers.
In the countries where these manufacturers are located, the lowest oil is actually the No. 95 oil in our country.
For example, Sweden only supplies 95, 98 and E85; although Germany has a very small amount of No. 91 gasoline, conventional gasoline is also No. 95 and above, and even the uncommon No. 91, and the price of oil is more expensive than 95.
Well, people foreign research and development always have to try, try to refuel, did not use that kind of oil to add, how to design this low-grade oil?
When these engines go to China, they either change the engine design like surgery, "Hey" you have to conform to China's national conditions, lower the scale, and operate.
Or it can only be in accordance with the original design, exactly the same also have to add 95 high label, directly to sell.
On the other hand, Japan's oil label is much lower, and the minimum number used is still 89 gasoline, which leads to most Japanese cars only requiring 92 in China.
Another example: American cars are actually the same reason, just need to add 92 on the line.
You see, this actually has something to do with what label oil the depot designs to use.
Plus 95 car, the fuel cost is not as expensive as imagined
Finally, for most friends, even if it is a car that requires 95, it will not be too expensive from the fuel cost, but it is not very comfortable psychologically.
For example: On March 7, 2022, I lived in Hangzhou, No. 92 was 8 yuan 01 cents/L, 95 was 8 yuan 5 cents/L, and the difference was 5 yuan 1/L.
If you say: 20,000 km a year, 100 km fuel consumption of 8L, plus No. 95 oil, how much is the annual fuel cost? 816 bucks.
What's more, many friends actually drive less than 20,000 km a year, if they drive 10,000 km, that is, 3 or 400 yuan.
And relatively speaking, the experience and motivation are a little better than 92, right?
Cars add 95 or 92, and the difference in fuel costs is not large every year
Therefore, in general, 100,000 cars also require 95, not everyone says "what do you do with this cheap car, add such expensive oil", "no princess life, don't get princess disease", not this thing.
It is in the country of origin, the engine design at the beginning, itself is designed according to 95, whether it is sold for 10,000 yuan or 1 million, it is recommended that you add 95, unless you go to China to operate.
For most friends, the actual meaning is that there is a difference between 95 or 92, and the annual oil cost is about 300 to 500 yuan, which is not particularly painful, although there may be a pimple in the heart.
The same tank of oil, 95 can really run 50km more than 92
As I said, adding 95 will be more expensive, but there are some friends in turn, not complaining about why 10 million cars should add 95.
Some friends said: "Hey, I said that I recommend adding 92, but I tried it myself, added 95 to run farther, the oil is more resistant to burning, the power is better, I am willing!" ”
Does it make sense? Is it a psychological effect? Or is there really some basis for it?
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bibliography
Shen Yitao,Wang Jianzhong,Shuai Shijin,Wang Jianxin. Effect of octane number on performance of gasoline engine[J].Internal Combustion Engine Engineering,2008.