Someone raised the question: Hello, my car is Feng Yu, has just opened a 5000 km, 93 # gasoline has been added, add the appropriate colleagues said 97 # gasoline can clean carbon deposits, the engine is good, does this view right?

This is totally wrong to say. 93 with the difference of 97 oil does not mean that the higher the grade the better the quality, 93 and 97 in fact refers to the octane number, the higher the grade the better the antiknock.

In theory, oil plus what is your engine with a compression ratio corresponds. (This description can be found), if not added as required. For example, you say would have required 93 plus, you have to add 97, what happens? Because 97 antiknock good, then the cylinder to the compression top dead center has not reached the optimum combustion pressure, it can not burn, but it is possible to increase deposits.

If you could have been the result of 97 plus 93, then not to the dead is likely to advance combustion, deflagration that is, the engine is damage. This theory is absolutely right, because the grade of gasoline can adapt to different compression ratio range, it is recommended to see their compression ratio, do not arbitrarily replace high-grade gasoline.

Then the compression ratio control how it may be that the reference standard (in fact, generally the specification): 7.5 ~ 8.0 between the engine 90 to 93 should be used in gasoline; compression ratio should be used 90 ~ 93 8.5 ~ 8.0 between gasoline ; compression ratio of 8.5 to 9.0 between 93 to 95 should be selected from gasoline; compression ratio of 95 to 97 should be used between 9.5 to 10.0 in gasoline.

Another netizen also have questions about the grade of gasoline: Hello, my car's fuel tank cap with a written recommendation No. 93 or more gasoline, but now I'm not here 93 gasoline, only 92 and 95, I should add 92 or 95 ?

In the country five "Gasoline" standard on the mentioned original 93 gasoline was adjusted to 92, the original 97 gasoline was adjusted to 95. If you say you want to add to the gas station No. 93 gasoline, the staff will not have to remind No. 93 gasoline, only 92, to some extent, shows that they recognize the new No. 92 gasoline is equal to the original 93 gasoline.

That new No. 92 with the original 93 gasoline it is really exactly the same? We have just started to change this label had been investigated in Guangdong, a year ago, with 34?f users said the new grade gasoline have increased fuel consumption compared to the previous question, 26?f users said that there is a problem of loss of power. DESCRIPTION 92 93 gasoline and gasoline have some performance difference does exist.

[We use gasoline would affect the findings made for the lower grade in July 2014, click on the picture to enter the original]

So what should a No. 92 or No. 95 it? In accordance with national standards and expert opinion, the original with 93 gasoline is now completely without problems with the number 92. But if you have some questions and concerns, then the new oil grade, you can also add 95 gasoline. However, we recommend that, because different components of the oil are not the same, so try to avoid mixing different grades of gasoline use. If you selected with the No. 92, has been on the best future use 92 gasoline.