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Perhaps, many owners still do not know that there are many embarrassment in car refueling. If you do not know these defects, believe me, you must suffer!
In the morning and evening, more morning and evening temperatures are relatively low during the day, gasoline has the properties of thermal expansion and contraction, and gasoline is charged by volume. Under low temperature conditions, the density of gasoline is relatively high, the mass per unit volume is also relatively large, and the refueling is also high. Do not say that it is small and cheap. How much money will this save? I just want to say quietly: Are you elderly locals? !
Bright yellow light then refuel? NO! NO! NO!
Do not refuel after the yellow light is on. The bright yellow light indicates that the gasoline is already lower than the oil pump. Under such circumstances, the continuous operating temperature of the oil pump is too high and it is not soaked in the fuel. This will not effectively reduce the temperature. If this is done for a long time, the life of the oil pump will be reduced or the oil pump will be directly damaged. More care must be taken when driving more than 30,000 kilometers. When the oil pump is too low, once the oil pump lifts the sediment from the bottom of the tank, it will be fortunate if it blocks the oil pump or blocks the oil path. Failure will result in misfortune.
If the owner’s car is used for commuting and commuting, and the refueling is more convenient, there is no need to top up the oil every time. This will only increase the weight of the car without any other practical significance.
When the urban raised height marking oil does not save fuel, different grades of gasoline should be selected according to the difference in engine compression ratio. The mid-range cars with a compression ratio between 8.5 and 9.5 should generally use 93-gasoline; those with a compression ratio greater than 9.5 should use 97-gasoline. At present, the compression ratio of domestic cars is generally more than 9, it is best to use 93 or 97 gasoline.
If the car often runs at a speed of 60km or less, it is suitable for adding gasoline No. 93. If it runs at a speed of more than 100 for a long time, it should add No. 97 oil, which can ensure the better performance of the car engine.
Car refueling has so much oil