What should be maintained in the daily maintenance of the car, and what is the quality of the engine

It is very common for 4S shops to change semi-synthetic engine oil, the quality of semi-synthetic engine oil is very average, and the car will still appear noisy when driving. If you want the car to be quieter, it is best to change to a engine oil containing liquid molybdenum, the car will be much quieter when driving, I used to use mineral oil car engine often has abnormal noise, and then all changed to GT magic red engine oil imported from Germany, the noise of the car has really decreased a lot.

In layman's terms, viscosity refers to the thickness and thinness of the oil. Most people have this common sense: oil becomes very thin in high temperatures and thickens in cold weather; If the oil is too thin and too thin, it will not play a lubricating role; If it is too thick or too thick, it will have high resistance and will be difficult to start and operate.

The working temperature of each lubrication part of the engine in use varies greatly, from the atmospheric temperature at the time of starting, the upper part of the cylinder liner piston in operation, the low temperature viscosity is too large, the flow is not good, the resistance is large and can not be started, or the friction surface is not fully lubricated for a long time after starting, and the wear of the parts is increased; If the viscosity is too small in the rotation, the oil film can not be maintained, the sealing between the cylinder liner and the piston is not good, the oil consumption increases, and the wear is also generated.

Therefore, a good engine oil should take into account both high temperature and low temperature viscosity, and professionally say that it has good viscosity and temperature performance. The viscosity and temperature properties of lubricating oil are expressed in terms of viscosity index, and if the viscosity index is large, the viscosity changes less with temperature. The viscosity index of engine oil is generally between 100 and 180, and the larger it is, the better the viscosity and temperature performance, and the higher the quality of the oil.

<><How to choose engine oil when the car is being maintained?

When we usually carry out car maintenance, the most common thing to do is to change the engine oil, many people say that when changing the engine oil, whether to choose the original factory, or choose the brand, which makes many people feel particularly confused, and do not know how to choose for a while.

We all know that engine oil is like the blood of an engine.

It is indispensable in the daily engine work process, only can play a good lubricating role, good oil can increase the service life of the engine, but now the types and models of engine oil are also very many, so that many people do not know what to choose for a while.

It's important to know that it's not just the original engine oil that's the best.

Many 4S stores will sell with the label of the original engine oil**, but you must know that these original engine oils may not be the original, but they have been replaced, but they are several times more expensive, which is really unnecessary. When choosing engine oil, you must choose a big brand of engine oil, and choose some well-known engine oil, so as to ensure the quality of engine oil and prevent being deceived by 4S stores.

In addition, not all engines are suitable for the original engine oil.

When we usually change the engine oil, we should choose the oil that is really suitable for the engine according to the characteristics of our engine, and some engine oils have good performance in stability and oxidation resistance, and the more expensive the better.

Fully synthetic has a longer protection period than semi-synthetic or mineral oil, but it depends on your vehicle type.

Tens of thousands of economic cars, because the engine machining accuracy is relatively low, the gap between the cylinder and the piston ring is not the finest, this kind of engine often appears in the car price of the lower cost of the model, to be more viscous oil to play a role in sealing between the cylinder and the piston ring, if the use of relatively thin fully synthetic oil, the engine seal will have some small problems, always feel no power to drive. And after stopping, most of the total synthesis will flow back to the oil pan, the lubrication and sealing of the engine have been damaged, after a long stop and start, the engine will be subject to greater wear, if it is a more viscous mid-grade engine oil in this engine will not appear this problem.

Synthetic engine oil is the highest grade of car oil, which can improve the performance of the car, in the car using synthetic engine oil, the maintenance cycle can be extended by 1000 km to 2000 km is no problem, but as mentioned above, it is not what car can use, so everyone should pay attention to it.

Body maintenance. Car body maintenance is also commonly known as car beauty. The main purpose is to remove all kinds of oxidation and corrosion outside and inside the car, and then protect them to highlight the "beauty" of the car as much as possible.

It mainly includes: car paint maintenance, cushion carpet maintenance, bumper, skirt maintenance, instrument panel maintenance, electroplating processing maintenance, leather and plastic maintenance, tire, wheel maintenance, windshield maintenance, chassis maintenance, engine appearance maintenance, etc.

In-car maintenance. The purpose of car body maintenance is to keep the car forever young, and the purpose of car maintenance is to let the car travel hundreds of thousands of kilometers without overhaul and ensure that the car is in the best technical state.

Basic maintenance is to check all the contents of the car, change the oil grid. At present, the longest oil change interval of fully synthetic engine oil is about 10,000 kilometers. Of course, oil with long oil change intervals is now being verified, but many of them are still in the verification period and have not yet been officially promoted.

Hello, after reading your question, if you want to have a longer maintenance interval or mileage, you can choose a fully synthetic engine oil, and the general maintenance mileage of fully synthetic engine oil is 10,000 kilometers.

Most cars use 5w-30, and the 5w-30 on the engine oil means: 5w refers to the lowest low temperature resistance of the engine oil Subtract 35 from this number is the lowest temperature resistance of the engine oil. 30 refers to the viscosity of the oil.

For the car, the engine is the "heart" of the car, and maintaining the engine is the key to maintenance, but the mixing of different brands and levels of engine oil is not allowed, and the formula and manufacturing process of different manufacturers are different.

First of all, buy the oil from the regular channel, anyway, the oil we add to the car must be authentic, so as to ensure the normal operation of our car. In addition to online franchise stores, offline franchise stores are also a good choice, if you are still afraid of buying fakes, then go to the 4S store, so that you can rest assured that the store. Of course, you can, but don't mix different lubricating oils together to use, before you want to change a new oil, you can completely drain the original oil, as long as the level of the oil you change is not lower than the level required on the car manual, please pay attention:

Rongji igniter.

It is okay to use any brand of engine oil for car maintenance, as long as the viscosity and certification standards of the oil meet the manufacturer's requirements. Automobile manufacturers do not require the use of a certain brand of engine oil, many brands of after-sales service oil also have 2-4 and brand, if mixed or use engine oil instead of gear oil, it is easy to lead to gear annealing, resulting in poor transmission, including gear system and gearbox wear resistance will be reduced. Similarly, if the engine oil is changed to gear oil, it cannot meet the repeated changes in the high and low temperature of the engine.

If the engine oil is consumed, you should prepare the same spare oil as the oil in your car, and there is no spare oil as a last resort, only other brands of optional engine oil, then after adding, please change the oil as soon as possible for maintenance. It is definitely better to choose a regular large enterprise to produce than which so-called fake brands, even dealers dare not guarantee that they are genuine, and the repair shop is nonsense.

The quality of these oils is not the same, and the effect is not the same, and it will have a different impact on the car, and it can maintain the car and make the surface of the car very smooth.

Engine oil can play a role in maintaining parts, or to protect the wear of the engine, the role in maintenance is very large, and can play a role in lubrication.

Engine oil is the lubricant of the engine, better oil quality will make the engine run better, it is recommended that no matter what car is suitable for semi-synthetic engine oil half a year 8,000 kilometers maintenance is the most cost-effective.

Engine oil can lubricate all parts inside the car, and each part will run more smoothly during the process.

The oil carries heat back into the oil tank and dissipates it into the air to help cool the engine.