【Owner's home car knowledge】After the upgrade of oil products in Shenzhen, most car owners report that the car power and fuel consumption have decreased and increased accordingly (For details, click:Car owner's home oil upgrade effect survey). For this reason, many car owners think about adding higher-grade gasoline. So is it really necessary for car owners to choose higher-grade gasoline? What if I put up the wrong gas? Will the gas station be held accountable?
◆Is it necessary to add higher grade oil?
After the power drops, do you want to add a higher grade of gasoline? This is a question that Guangdong car owners are very concerned about recently. So, should we add higher-grade gasoline? Our advice: it depends.
Because, what grade of oil the car needs to add depends on the compression ratio of the engine and some related parameters. The level of the gasoline label only indicates the octane number of the gasoline. For example, No. 93 gasoline means that its isooctane ratio is about 93%, and the ratio of n-heptane is about 7%. Of these, "iso-octane" is the most resistant to knocking, while "n-heptane" is quite prone to knocking. That is to say, the higher the grade, the better the anti-knock performance of the fuel, but not the better quality.
Therefore, whether to add higher-grade gasoline depends on the fuel standard recommended by the manufacturer. If the manufacturer recommends the use of No. 93 or No. 95 gasoline, the author recommends that the car owner use No. 95 gasoline instead of No. 92 gasoline after the standard is changed. Because that is the data tested by the manufacturer through experiments and in practice, and it has a scientific basis. If there is no special recommendation, after changing the standard, add the corresponding branded oil before changing the standard.
◆What should I do if I add the wrong oil?
If a car that drank low-grade oil was filled with high-grade oil, then the car is usually fine. But if it is a car that drinks high-grade gasoline and adds low-grade gasoline, it depends on whether the two grades are too different and the amount added. If the difference between the two labels is too large or almost a whole box of low-grade oil is added, it is recommended that the owner let go of the wrong gasoline or purchase related fuel additives to improve the quality of the oil and reduce the damage to the engine caused by low oil.
The problem is more serious if diesel is added to gasoline cars or gasoline is added to diesel cars. In the former case, the car will vibrate, the exhaust will emit black smoke, and even fail to start the ignition. In the latter case, the car can run normally at the beginning, but after a certain distance, the car will become boring and the idle speed will become unstable.
This is because the power principle of diesel vehicles is compression atomization, while the power principle of gasoline vehicles is ignition. If diesel is added to a gasoline car by mistake, the car will not start immediately because diesel is not flammable; but if gasoline is added to a diesel car by mistake, the mixed liquid can still make the car run.
Therefore, it is recommended that car owners: If you find that the vehicle has been filled with the wrong oil, you should contact the auto repair shop as soon as possible to clean the fuel tank and oil circuit system, and then conduct a comprehensive inspection of the engine. Do not start rashly to avoid damage to the car.
◆carWho is responsible for the wrong fuel?
If there is a problem with the vehicle due to wrong fuel filling, the first reaction of most car owners may be to seek compensation from the gas station. So, for this kind of thing, will the gas station pay? The author checked the relevant cases on the Internet and came to the conclusion that if the wrong fuel is added to the vehicle due to the negligence of the gas station and the damage is caused to the vehicle, the gas station should bear the relevant costs and losses.
If the vehicle is damaged due to negligence of the owner, the gas station will not bear the relevant responsibility. In this case, the car owner may think of free maintenance during the vehicle warranty period provided by the 4S shop or notify the insurance company for compensation. Does this method work? The answer is no, because neither the warranty nor the insurance policy clearly stipulates that the vehicle failure caused by adding wrong fuel will not be guaranteed or compensated. Therefore, for those vehicles that are easy to confuse oil products, car owners must pay more attention when refueling.
Summarize:What grade of gasoline a car should use is not something that the owner can change at will, it is determined by the car itself. Car owners should not blindly choose lower or higher grade gasoline during daily use.
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