The oil level of the car is as high as a hot car and a cold car? 30

The oil level of the cold car and the hot car oil is not the same, and the oil filling cannot be higher than the upper limit of the oil dipstick!

The oil level of the car is as high as a hot car and a cold car? This may be a problem with your measurement, how long your so-called cold car is placed, whether it is left overnight or cooled, this is all different. So what you measure may not be accurate.

The second is that if you measure accurately, that is, the thermal expansion and contraction of the engine oil are not obvious, that is, the expansion rate is low. So the difference between hot and cold cars is not big, in fact, there is nothing wrong, the main thing is to see whether the oil is reduced, that is, whether to burn the oil, nothing else is too big, now the car has passed, your car is only three years or for your own use, and the frequency of use of taxis will not burn engine oil for 3 years, so you can rest assured to use it.

The reason why the oil scale of the car is higher for a cold car than for a hot car:

Because in the cold car state, all the oil is deposited in the oil pan, and after a period of hot car, due to the oil pump constantly driving the oil to run, some of the oil has not been precipitated back, and the viscosity of the fully synthetic engine oil is higher and the fluidity is lower, so the cold car measurement will be higher.

Pull out the oil dipstick to see the highest and lowest levels, if the oil is lower than the lowest level of the oil dipstick, add; If the oil is higher than the highest level of the oil dipstick, it will not be added, and the excess oil should be pumped out, so the optimal height of the oil level is between the highest (upper limit) and the lowest (lower limit).

The height of the oil level exceeds the upper limit of 1 cm, indicating that the oil is added more, and the extra part should be withdrawn, and the normal inspection should be stopped half an hour after the flat engine is turned off, and the check liquid level will be slightly lower after landing.

Not a big problem. There's nothing wrong with this, it's normal not to worry.

The coefficient of expansion of gasoline is not high, and hot and cold years should not change.

It has been measured many times in a row, and the oil is much more when the car is hot than when it is cold.

Questions on Why is the oil level lower in cold car oil than in hot car? This is very normal, basically all the existing water flows into the oil tank when the car is cold, so the oil level in the oil tank is the highest at this time;

After the hot car, some of the existing ones come to the lubricating pipe, so that the oil in the oil tank is reduced, and the volume change caused by the thermal expansion and contraction of the oil is not very large.

The engine is running and shaking, and the oil volume of the engine naturally expands with the increase of temperature, bringing certain fluctuations.

The reason why cold engine oil is less than that of hot car is due to the principle of thermal expansion and cold velocity. But no matter how much or little oil you have, before starting the engine every day, you must carefully check the amount of oil, pull out the oil dipstick, and take the middle and upper part of the dipstick to the level of the scale. It can't be too high, and it can't be too bad.

Too much is higher, affecting the power output and wasting oil. Too much is worse, reducing the oil lubrication effect and increasing the cylinder temperature. Only by ensuring the height of the oil level can the engine be maximized.

It is normal for this oil to earn less in the state of cold car, and it is normal for this amount to be more when it is hot, because the engine is running and shaking, and the amount of oil of the engine will naturally expand with the increase in temperature and bring certain fluctuations.

There is a quarter difference between the oil dipstick of a cool car and a hot car, and the oil dipstick is on the top or side of the engine with an orange or red hand pull tab. The oil dipstick is a simple liquid level gauge, which can directly display the liquid level height of the lubricating oil in the lubricating oil tank, with obvious upper and lower limits, and the detected oil level can be in the upper and lower levels. The correct way to use an oil dipstick is:

1. Check the oil dipstick overnight or after stopping for half an hour; 2. Look at the oil dipstick to see the correct oil level position, and check the front and back, whichever is less; 3. Check the oil dipstick frequently and add it in time; 4. Pay attention to the qualitative change of engine oil; 5. Be wary of the failure of the oil dipstick.

In short, the liquid level height of the oil is lower when the engine is hot than that when the car is cold, because there is still oil in the lubrication system when the engine is working, and the transmission oil is the opposite, because the foam expands after the oil is heated.