Refueling the car seems to be a simple matter, stop at the petrol station, say "plus X hundred or plus x thousand," and then pay is OK! But often the easier it looks, The connotation of the doorway is particularly large. The Internet is also full of rumors, and today I said to you.

What does the diesel label mean?

Internationally, light diesel oil is generally divided into 10#, 5#, 0#, -10#, -20#, -30#, and -50#7 labels. At present, only 6 other than 10# are used in our country. Labels. The number in the diesel label represents the temperature required for the diesel to stop flowing, which is commonly known as the freezing point temperature.

For the correspondence between all six types of diesel oil and their applicable temperatures, refer to the following table:

Do not tangle time

Some people think that the temperature in the morning is low, and that after a one-night cooling of diesel, the oil temperature is the lowest. The high temperature at noon will reduce the density of diesel fuel, and the same amount of oil (volume) will be reduced. This argument is indeed very much in line with the physical knowledge of thermal expansion and contraction, but although this seems to be very scientific, we must all know that the tanks at gas stations are generally buried underground, and the impact of external temperature changes will be much smaller, oil It is very rare that there is a lot of difference in temperature and energy, so if it is true that it is possible to have a little bit more oil instead of refueling it in the morning, it would be a bit of a ridiculous thing. The time for refueling really need not be too tangled.

It is best not to add oil when tanker unloads oil

It is correct to say that tankers do not refuel when unloading oil.

When the tanker unloads oil to the tank of a gas station, due to the very fast flow rate, it is easy to stir the impurities in the sedimentation tank of the underground oil tank. At this time, the impurities in the oil pumped by the tanker are relatively more. If you add fuel at this time, it is easy to add to dirty oil, which is unfavorable for the car. At the same time, the oil transported by the tanker, after the sun's exposure, usually has a relatively high oil temperature. Therefore, if a tanker truck is unloading oil, it is better to change to a petrol station. Of course, if you are not convenient to other gas stations, you don't need to be too tangled. After all, the car's oil circuit is filtered by filters.

Do not add too much oil

It is not alarmist to say that oil is too full and dangerous.

Some vehicle owners saw the cost close to a hundred after they had jumped into the oil gun. They called the staff “round up” and continued to add oil to the fuel tank. In fact, such an approach is very wrong and has serious security risks. Diesel heat will swell. If it is heated too much, it is very likely that diesel will overflow directly from the tank. Even if you do not consider your own expansion, you may encounter some big bumps that will make gasoline overflow. Once there is current or sparks meeting with gasoline, then There must be counts in the consequences, especially in the hot summer months, so don’t continue to add diesel for “round up”.

Adding half a box of oil is actually more fuel efficient

Only adding half of the oil can be even more fuel-efficient. It is indeed scientific, and the fuel consumption is not only related to engine technology, transmission efficiency, tire performance, and drag coefficient, but also depends on the weight of the vehicle body. The weight of gasoline, of course, is also included. The weight is relative to the total weight of the truck's body, but if it accumulates over time, it will actually have a more fuel-efficient effect. So if you are driving in the city, you can use a small number of ways to refuel, but if you run long distance, it is still the best.

Do not worry too much about jumping guns during refueling

There is such a view in the net transmission: During the refueling process, if the refueling officer opens or closes the oil gun (jumping gun), the fuel gauge of the refueling machine will be less virtual, that is, the number displayed by the machine is more than the actual oil added. Theoretically speaking, this kind of error will occur because the flowmeter in the tanker runs with inertia. When the oil gun is suddenly shut off, the flowmeter will not stop immediately, and the number of beating on the tanker will not stop immediately. The number shown is greater than the actual amount of fuel. However, in fact, this error is very small, as long as it is not deliberately repeated several times, it is not a pit, no need to care too much.


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