What s the harm of using 5w40 for a new car

In fact, there is no harm in using 5w40 in new cars, but it will affect engine performance. Due to the relatively high viscosity of 5w40, the fluidity is poor, and the resistance is large, which will affect the operation of the new car engine, thereby increasing the fuel consumption of the car. However, it is precisely because of the high viscosity of 5w40 engine oil that it can effectively reduce the wear between engine parts, but for new cars, it is not conducive to early running-in.

If the viscosity of the replaced oil is not suitable, the oil viscosity is too low, the oil pressure is too low, the degree of lubrication is not enough, and the friction between the engine parts increases, resulting in abnormal noise, which will aggravate wear; If the oil viscosity is too high, the drag will be great, which will increase the load on the engine and thus increase fuel consumption. Therefore, when choosing the viscosity of the oil, it is necessary to refer to the recommendations in the car maintenance manual, because the technical requirements of the engine designed by each car manufacturer are different, and the requirements for the viscosity of the engine oil are also different.

The choice of engine oil is very particular, the owner can choose the oil can be combined with the local maximum and minimum temperature, the grade of the vehicle and the condition of the vehicle to choose, if the choice of too viscous oil, will increase the movement resistance, affect the engine power.

If you choose an oil with too little viscosity, the lubrication quality cannot be guaranteed, and it will aggravate the wear of the engine. For engines that have been seriously worn and the gaps between the fittings are large, a higher viscosity oil can be used to strengthen the sealing performance of the fittings.

To put it simply, it is better to choose a thinner engine oil for new cars, and it is better to use a more viscous engine oil for cars with higher kilometers.

First, look at the common speed section of your car, of course, high speed wants the viscosity to be a little lower for smooth lubrication; Second, depending on the average temperature of the place you are in, you can choose a high viscosity in the south to adapt to the high temperature.

5W40 is an ordinary model with a moderate temperature and low speed. So it has nothing to do with the old or new car.

There is no disadvantage, that is, the performance is poor, and the new car is cheaper if you are a novice, so you won't lose too much if something happens.

The old car 0w40 or 5w40, the old car 5w30 or 5w40, many people still don't know. Now let's take a look!

1.If there is burning engine oil in the car, you can use 5w40 engine oil. If the car engine does not burn oil, you can use 5w30 oil.

2.Known as the blood of the engine, engine oil not only lubricates the engine, but also dissipates heat, cleans, and seals.

3.Motor oil is made up of base oils and additives that enhance the performance of the oil. Common oil additives include dispersants and antioxidants.

4.There are two types of motor oils: fully synthetic, semi-synthetic, and mineral oils.

5.Synthetic motor oil base oils are synthetic, so the molecules are about the same size and shape. Synthetic engine oil has better lubricating properties and longer service life.

6.The base oil of mineral oil is extracted from petroleum, so its molecular size and shape are irregular. Mineral oil is not as lubricating as synthetic oil and synthetic oil, and its service life is not as long as that of synthetic oil and synthetic oil.

7.The w in the oil model is winter. If there is a w in the oil model, this oil will work normally in the winter. The number in front of w represents the low-temperature flow properties of the oil, and the number after w represents the high-temperature viscosity of the oil. The higher the value, the greater the viscosity.

Summary. The main thing is that the low temperature fluidity is not the same in winter, the smaller the number, the better the low temperature fluidity, and the better the lubrication. The higher the number, the thicker the oil, and the low temperature in winter does not flow well.

Hello. Is there any?

Hello, this difference is mainly due to the different viscosity, and the low temperature fluidity in front of this winter is a blind person. 5 represents the low temperature fluidity in winter, followed by the viscosity of the oil. The higher the number on the back, the thicker the oil.

Generally, German cars or oil-burning cars only increase viscosity of engine oil. Usually, if the Japanese car does not burn engine oil, you can add 30 degrees of viscous grinding.

The difference between 10w and 5w is.

The main thing is that the low-temperature fluidity is not the same in winter, the smaller the number, the better the low-temperature fluidity, and the lubrication will be a little better or bright. The higher the number, the thicker the oil, and the low temperature in winter does not flow well.

5w40 and 10w40 oils.

If the car doesn't burn engine oil, don't use too thick, use 540 or 530.

The larger the number is stronger viscosity is it.

My car just burns engine oil.

Yes, yes, the higher the number, the thicker the oil.

If you burn the engine oil, use a thicker one, and the viscosity of 10 4 0 will be resistant to burning.

The car filling of 5w30 engine oil with 5w40 engine oil has no effect, and 40 means that the oil can withstand better than 30 in high temperatures.

One of the key in car maintenance is the replacement of engine oil, when changing the engine oil, the owner of the car needs to pay attention to the model number of the engine oil, often the outer packaging of the engine oil will have a logo similar to 5w30 and 5w40. The performance of different types of engine oil will vary.

5w30 and 5w40 represent the viscosity of the oil, which belongs to the general oil of winter and summer, w is the abbreviation of English winter, the number in front of w represents the low temperature viscosity, the smaller the number, the better the low temperature fluidity, and the lower the applicable minimum temperature; The number after the w represents the viscosity of the oil at 100 degrees Celsius.

10w40。If the minimum temperature is not lower than minus 25 degrees Celsius, then the engine oil 10w40 is suitable for old cars, so in the end, it is necessary to decide based on the actual situation.

Engine oil 10w40 and 5w40 have the same high temperature viscosity grade, and the viscosity of 40 belongs to the high side, which is more in line with the old car, because the old car is used for a long time, after a long period of wear, the gap between the internal parts of the engine becomes larger, so the viscosity of the oil is needed to form a thicker oil film, so as to better protect the engine.

Precautions for the use of engine oil.

It's not good to change the oil too quickly and too often. Generally, when the owner sees the phenomenon of the engine oil turning black, he thinks that there is a problem with the engine oil, and then changes it frequently, in fact, this is only the oil is oxidized, not the oil has deteriorated, so in this case, there is no need to change the oil.

As long as the oil has not expired and there will be no bubbles and other things, it will generally not deteriorate easily, so there is no need to change it frequently. Frequent replacement can only increase your own fuel money, which is not good for the car, and it is also a wasteful phenomenon.

With 5w30.

The naturally aspirated version of the EA211 is fine with 5W30 engine oil. Engine oil is called the blood of the engine, if there is no engine oil in the engine, the engine can not run normally, the engine oil in the engine not only plays a role in lubrication, but also plays a role in cleaning, sealing, buffering, rust prevention, and heat dissipation.

Engine oil is divided into fully synthetic engine oil, semi-synthetic engine oil, and mineral engine oil.

Difference Between 5w30 and 5w40

5w30 and 5w40 are both all-season oils, 5w means that both oils have the same low-temperature starting performance, and the difference between them is mainly 30 and 40, that is, the fluidity of the oil at 100°C. According to the rules for the formulation of engine oil labeling, the larger the number after w, the worse the fluidity at 100°C, so the high-temperature fluidity of 5w30 is better than that of 5w40.

A 5w40 oil is more suitable for older cars than a 5w30 oil

For old cars, the wear and tear of the engine's valve mechanism, crank connecting rod mechanism and other components are already more serious, so it is necessary to choose 5w40 engine oil with higher viscosity. Because the viscosity of 5w40 oil is higher than that of 5w30, it can form a thicker oil film on the parts, thereby slowing down the continuous wear and tear of the parts and the noise caused by the increase in the gap between the parts.

What is an old car?

Generally speaking, a car that is more than five years or more than 100,000 kilometers can be counted as an old car, but this definition is not very accurate, after all, everyone has a different degree of care for the car. For example, if some new cars often drive in some very bad road conditions, then the degree of wear and tear of the engine will be relatively large; And some cars have not run 80,000 kilometers in ten years, so the wear and tear of the engine will be relatively small.

But under normal circumstances, our car owners can still feel the engine wear, such as increased fuel consumption, power decline, burning oil, etc. are all manifestations of engine wear, and people who have been driving this car can clearly feel it.

Summary. Hello dear, the relevant oil level used in old cars depends on the engine of the vehicle. First, if it is a naturally aspirated engine, it is normal to use 10w40 oil, but if it is in the Tohoku region, it is recommended to use 5w40.

Second, if it is a related model below 80,000, there is no problem with the normal use of the 10w40 level. Thirdly, this 5w41 is generally a fully synthetic series of engine oil, and 10w40 is a semi-synthetic or ordinary mineral engine oil, and the oil replacement cycle is different. Kiss, I wish the family happiness.

If you have any other questions, please continue to ask questions, and I will wait for your reply.

10w40 or 5w40 for old cars

Hello dear, the relevant oil level used in old cars depends on the engine of the vehicle. First, if it is a naturally aspirated engine, it is normal to use 10w40 oil, but if it is in the Tohoku region, it is recommended to use 5w40. Second, if it is a related model below 80,000, there is no problem with the normal use of the 10w40 level.

Thirdly, this 5w41 is generally a fully synthetic series of engine oil, and 10w40 is a semi-synthetic or ordinary mineral engine oil, and the oil replacement cycle is different. Kiss, I wish the family happiness. If you have any other questions, please continue to ask questions, and I will wait for your reply.

Hello dear, the relevant oil level used in old cars depends on the engine of the vehicle. First, if it is a naturally aspirated engine, it is normal to use 10w40 oil, but if it is in the Tohoku region, it is recommended to use 5w40. Second, if it is a related model below 80,000, there is no problem with the normal use of the 10w40 level.

Thirdly, this 5w41 is generally a fully synthetic series of engine oil, and 10w40 is a semi-synthetic or ordinary mineral engine oil, and the oil replacement cycle is different. Kiss, I wish the family happiness. If you have any other questions, please continue to ask questions, and I will wait for your reply.

The 5W W-20 and so on in the engine oil indicate the viscosity grade of the engine oil, that is, the SAE grade.

First of all, let's talk about what is the abbreviation of the English "American Society of Motor Vehicle Engineers", which measures the low temperature starting viscosity, low temperature pumping viscosity, high temperature kinematic viscosity, high temperature shear viscosity and other values of automobile engine oil, and then according to the measured data, the engine oil is divided into several grades, which is the SAE viscosity index of engine oil.

So what is viscosity? Simply put, it is whether the lubricating oil is thin or thick.

Low viscosity is relatively thin, the resistance to relative movement under the action of external force is small, and high viscosity is relatively dense and resistant.

Engine oil is divided into single viscosity oil (such as SAE30) and multi-viscosity oil (such as SAE5W-30), and now most vehicles use multi-viscosity engine oil, because this oil contains a variety of special additives, so that the oil is easy to flow and non-condensing in a low temperature environment, and maintain viscosity and non-decomposition in a high temperature environment.

What does the SAE5W W40 label on the oil drum mean?

The smaller the number before w, the smaller the viscosity at low temperatures, the better the fluidity at low temperatures, and the lower the applicable minimum temperature. The resistance during normal use is small, which is conducive to reducing fuel consumption. Now it is also a more economical plan for major manufacturers to reduce fuel consumption, and Lao Hou believes that it will be a trend.

However, the viscosity of the oil is too small, and the oil film is not well formed, which will have an impact on the wear of the engine.

The larger the number before w, the greater its viscosity at low temperature, and the low temperature fluidity is not good, so it cannot be used at low temperatures beyond its capacity, otherwise it will not be able to start. Because at this time, the oil was frozen to too much viscosity, almost becoming a semi-solid state, the starting resistance was too great, and the starter could not drive the crankshaft to rotate!

The larger the number after w, the greater its viscosity at high temperature, the more suitable it is to be used under high oil temperature conditions, and the use of the engine can also form a good oil film at high oil temperature to reduce wear. However, the resistance of the engine will also increase, which is not good for fuel consumption and power.

The smaller the number after W, the smaller its viscosity at high temperatures, which is beneficial for fuel consumption and power. But be careful not to be too small to prevent poor lubrication and excessive wear.

As for what kind of engine oil is used for the self-priming engine, it depends on the specific model and the use environment and the age of the car. Generally, Japanese cars prefer to use engine oil with lower viscosity, generally using 5w-30 engine oil, or even 0w-20 engine oil; German cars generally use 5w-40 engine oil. In addition, the engine has a long service life, and the viscosity level of the oil should be increased.