It is better to add 93 gasoline or 97 gasoline

Hello, No. 97 gasoline is higher than No. 93 gasoline compression ratio, but also a little more expensive, generally engine compression ratio below 7 to choose No. 90 oil;

If the compression ratio is 7-9, you need 93 oil.

If the compression ratio is 8-10, you need 95 oil.

If the compression ratio is more than 10, you need 97 oil, and if you don't use it according to this method for a long time, it will cause some damage to the engine.

If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

This depends on what kind of engine it is, in general, the driver's manual will clearly state the minimum standard for you to use gasoline, of course, it is also possible to use high-grade gasoline, as long as you can bear it, it is acceptable, to some high compression ratio engines, it is recommended to use 97 gasoline. If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

No. 97 is good, the power is strong, and the carbon deposits produced by combustion are less [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

It depends on what kind of car you are, but in theory, of course, it is good to be No. 97, [If there is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, you want to see what car plus 97 is better.

If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

No. 97 burns, a little more fully [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

97 [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

93 and 97 should not be mixed.

Many car owners mistakenly believe that the number of gasoline is the standard of purity and quality of the oil, and the higher the label of the vehicle, the better, which is wrong. The level of gasoline marking only indicates the size of the octane number of gasoline, and different grades of gasoline should be selected according to the different compression ratio of the engine.

Mid-range cars with compression ratios between should generally use 93 gasoline; Cars with a compression ratio greater than 97 should use 97 gasoline. At present, the compression ratio of domestic cars is generally above 9, and it is best to use 93 or 97 gasoline.

If the engine with high compression ratio uses low-grade gasoline, the cylinder temperature will rise sharply, the gasoline will not be burned completely, and the machine will vibrate strongly, so that the output power will be reduced and the parts will be damaged. If the engine with a low compression ratio insists on using high-grade oil, there will be a phenomenon of "flame retardation", that is, it is not yet the spontaneous ignition point when it is pressed to the head, and there will be incomplete combustion, which is not good for the engine.

First, it is best not to mix combustion, try to use gasoline suitable for the label, accidentally mix the two fuels, the problem is not big, after using up to add back to the original oil number.

2. The so-called gasoline label is actually the ratio of the actual gasoline anti-knock resistance to the anti-knock resistance of standard gasoline. The higher the grade, the stronger the anti-explosion performance. Standard gasoline is composed of isooctane and n-heptane.

Isooctane has good knock resistance, and its octane number is set at 100; N-heptane has poor knock resistance, and is prone to detonation on gasoline engines, and its octane number is set at 0. If the gasoline is marked 90, it means that the gasoline of this grade has the same anti-knock properties as standard gasoline containing 90% isooctane and 10% n-heptane.

It is best not to mix No. 93 gasoline with No. 97 gasoline, because it does not matter if different grades of gasoline are added once or twice, but it is best not to mix. The anti-knock performance and other indicators of the standard gasoline are consistent, and the gasoline mixture has no effect on the vehicle, and the gasoline of different standards will only have an impact on the exhaust emissions of the vehicle, and will not affect the normal operation of the vehicle engine.

If the car with No. 97 gasoline is mixed with No. 93, if it is a small amount of No. 93 gasoline, the remaining part is fully added to No. 97 oil, which generally does not have much impact on the engine. If you add too much 93 oil, or even 90 gasoline, then it is necessary to put the wrong gasoline and refill the correct gasoline, because this may cause some damage to the engine and cause the engine to not work properly. If the car with No. 93 gasoline is mixed with No. 97 oil, although there is no great harm to the vehicle, there is a possibility that the gasoline burns incompletely, which is not only costly, but also a waste of resources.

Gasoline labeling is related to octane number.

The number of oils used is related to the compression ratio. The compression ratio is 7 5 8 0 should be used 90 car gasoline; The compression ratio is 8 0 8 5 should be used 90 93 car gasoline; The compression ratio is 8 5 9 5 should be used 93 95 vehicle gasoline; The compression ratio is 9 5 10 should be 95 97 car gasoline. Generally, the compression ratio can be found in the car manual, and in addition to the manual, the car manufacturer will also mark the recommended fuel label on the inside of the fuel tank cap.

The owner should strictly follow the different compression ratios of the automobile engine and choose the corresponding grade of automotive gasoline in order to make the engine play the best performance.

If unleaded petrol is used in a lower number than the specified requirement, the engine will detonate. Generally, it occurs during rapid acceleration and climbing, if the engine has a long-term knock due to the low gasoline grade, it will damage the engine, and even damage the piston and cylinder block.

However, the choice of gasoline is not the higher the grade, the better, the main basis for the choice of gasoline label is the compression ratio of the engine. Parameters such as compression ratio and ignition advance angle have been set in the engine computer, and the owner has no problem choosing gasoline in strict accordance with the requirements of the instructions. The blind use of high-grade gasoline will not give full play to its advantages of high anti-knock performance, and will also cause a waste of money.

1. The fuel used should be selected according to the compression ratio of the automobile engine, and the higher the grade, the better.

3. Since the composition of No. 97 gasoline and No. 93 gasoline is not exactly the same, it will cause certain adverse effects on the engine during the replacement process, so it is recommended not to change the fuel number frequently.

4. I don't know why you want to talk about gasoline from 97 roundabout 93, from my driving experience, it actually costs about the same with these two marks of gasoline. Although No. 97 oil is more expensive, it feels like the actual cost per 100 kilometers is about the same as No. 93 oil.

It's best not to mix them!

It depends on the gasoline label required by the original car, if it is required to use 97, it is not good to mix 93; The requirements for some supercharged oil products are strict, and the oil circuit and fuel injection head should be cleaned in time after mixing; It doesn't matter if you mix 97 with 93, it's just a bit wasteful. In the case of gasoline itself, it is completely possible to mix with different labels.