No. 97 gasoline wasted with you

　　According to the China Petrochemical Corporation Guangdong Branch of oil experts said the choice of petrol cars based primarily on grade gasoline engine compression ratio is determined , can not be measured by the price . Typically , the compression ratio should be used in the 7.5-8.0 90 # motor gasoline ; compression ratio should be used in the 8.0-8.5 90 # -93 # gasoline vehicles ; compression ratio should be used in the 8.5-9.5 93 # -95 # gasoline vehicles ; compression ratio 9.5-10 should use 95 # -97 # gasoline vehicles . The specific choice of approach should start to buy a car manual compression ratio to detect the car , and then choose the appropriate grade of gasoline , in order to make the best out of the engine 's performance.

　　If long-term use of high-grade low- grade gasoline cars , ranging from detonation ( commonly known as knock ) , reduce vehicle power , increased fuel consumption, engine weight is cause serious damage. On the contrary, if the use of motor gasoline octane number had higher engine compression ratio requirements, not only economically wasteful , but also lead to a slow fire , burning prolonged power down, and even burn the exhaust manifold , which is unscientific the .

　　There are some owners also pointed out that the quality of oil gas station off, however, not as low-grade gasoline grade gasoline .

　　Experts said that due to the fact that the real high-grade gasoline with a higher octane rating , better combustion , can bring more power and lower emissions for cars. Usually large state-owned gas stations from the national large-scale high-grade gasoline refineries, tools and more complete factory inspection procedures , quality assurance, is not a problem. Some private petrol stations, unscrupulous businessmen freeloaders that grade gasoline prices higher, so shoddy, some small refineries from 97 # gasoline purchased at a low price , and most of these substandard gasoline , generally contain more or less olefins, sulfur or benzene ; octane number or additives in some low-grade gasoline , making gasoline soared high to scale 97 # gasoline. When the car long-term use , there will be residual impurities cylinder injector blockage or problem , consumers should pay special attention .

　　Equipment capacity.