”
"How good is it to buy a wiper?" Silicone coating or ordinary rubber? Boneless or boneless? ”
"How to choose the air conditioning filter, each one says that they can filter PM2.5, can it really work?"
"Where is the cheap oil?" Is this oil suitable for my car? Will it be a counterfeit product? ”
……
The old driver who can drive the car out of the F1 feeling can't escape the car maintenance every year: always thinking about spending the least amount of money, doing the best thing, and afraid of trouble. But how can there be such a good thing under the heavens! Many times, no matter the new and old drivers, even if they rack their brains, they still can't escape the various traps of car maintenance.
Some time ago, a senior car critic with more than ten years of experience, changed the wrong gearbox oil, resulting in lack of climbing, and finally had tow the car to the 4S shop for re-repair; there was also a car white, driving over to ask us how a musty smell in the car, the result was to disassemble the air conditioning filter to see all the mold - fifty or sixty thousand kilometers, not replaced.
Moldy air conditioning filter.
There are many more related examples, which will not be repeated here. Although these car maintenance problems will not be a big mistake in a short period of time, they will cause big trouble over time. If you don't want to jump into these pits and want to do the most perfect thing with minimal effort, it is very necessary to read this article.
We prepared three questions to talk directly to the BMW Gold Medal aftermarket weigong working on the front line to see how this expert views car maintenance and those things.
Of course, if you think you're a maintenance guru, you can also slide directly to the end of the article. There are 20 multiple choice questions there to test your true level.
1
At the end of the year, what maintenance items need to be paid attention to?
At the end of each year, there are more questions about maintenance in the background, and it seems that everyone likes me to give vehicle health care at the end of the year. But when it comes to maintenance, many people only know the case of changing the oil, and do not know that there are more than ten items that need to be checked and maintained.
"People only know that changing oil is not without reason." Mentioning why everyone only remembers to change the oil, Wei Gong smiled, "The engine is one of the most expensive components in the oil truck, so everyone does not dare to be sloppy." In addition, the oil is usually changed once a year or 10,000 kilometers, which is the most frequent of all maintenance projects, and other projects are generally once every two or three years. ”
"In addition to oil and oil filtration, there are also 'three filters and two liquids' in the routine." Wei Gong added. The so-called "three filters" are air conditioning filters, air filters and fuel filters, while "two liquids" refers to brake fluids and coolants.
"If you go to our BMW officially authorized after-sales service outlets for maintenance, we will maintain it in different sizes, small maintenance is to change the oil and oil filtration, about once a year; large maintenance is in addition to the oil and oil filtration, but also to replace the air conditioning filter, air filter, fuel filtration and spark plug, about once every two years."
"Three filters", in fact, many people know to change, but for brake fluid and coolant, many people will forget. In fact, they will have wear and tear during use, and if you do not pay attention to inspection and replacement, it may directly threaten driving safety.
As far as the brake fluid is concerned, it itself is hydrophilic, it will absorb moisture in the air, if it is not replaced for too long, its boiling point will be reduced, and water vapor may be generated at high temperatures, reducing braking efficiency. According to BMW's manual, the brake fluid is replaced for the first 3 years and every 2 years thereafter.
"In fact, maintenance is not only about changing things, in my opinion, the most important thing is inspection." Weedson said.
Regardless of the size of the maintenance, BMW's maintenance personnel will check the wiper, battery, coolant, brake pads, tires and other components. Although these things do not need to be replaced regularly like oil and three filters, they are vulnerable parts, and there are damages at any time, and once there is a problem, it may cause safety hazards and cannot be taken lightly.
Online, I reckon many people have seen "Which is better, the repair shop or the 4S shop?" more than once. "And so on. Here is a good answer: most repair shops do not have a standardized process, where the pain is treated, but the 4S shop has a set of standardized processes, can find out the potential problems of the vehicle, eliminate hidden dangers. For example, BMW's after-sales service system has a VHC vehicle health check, which includes a comprehensive test of more than 70 small items in 23 major items.
In addition, in terms of service, the repair shop cannot be compared with the 4S shop. To the 4S shop maintenance, you don't need to consider what needs to be changed, what things don't need to be changed. What projects you have done, 4S stores all have records. All you need to do is hand over the keys to the after-sales staff, then go to the lounge to play with your phone and watch TV.
Of course, there are certainly some people who say that maintenance is expensive in 4S shops. It is true that there is no denying that the price of maintenance in the 4S shop is more expensive than that of the repair shop, but I think it is also worth the money.
After all, while enjoying the standardized process and excellent experience of the 4S store, you don't need to worry about whether you are using counterfeit and shoddy products, and the 4S store will only use the original parts. Spending money to buy peace of mind is a major trend in consumption upgrading. In addition, when you want to change the car, "the whole process of maintenance in the 4S shop" will greatly improve your bargaining power, comprehensively, to the 4S shop maintenance is not necessarily more expensive.
BMW's Changyue Maintenance Service, registered as a BMW member, enjoys a 20% discount on vehicle age of more than 3 years and a 30% discount on maintenance for more than 7 years.
2
Avoid box maintenance
Although the above, we always measure the maintenance cycle in terms of years and kilometers, in fact, this is only a relatively general algorithm, or it is only suitable for most consumers who use cars normally, but it is not suitable for individual users. "Maintenance should be based on actual vehicle conditions and should not be limited by these rules and regulations." Warm tips from Wei Gong.
Wei Gong gave an example, if there is a relatively large amount of dust in the place where you often pass, then the air conditioning filter may need to be replaced in advance. Because the only factor that determines the air conditioning filter is the amount of dust, just like the water cup also has the maximum volume, once the dust capacity reaches the saturated state, it will block the air conditioning filter, not only easy to accumulate bacteria, but also reduce the efficiency of the air.
Liu Shu, friends in Beijing should be no stranger to it. These things will speed up the replacement cycle of air filters.
This is still easy to detect, after all, as long as the efficiency of the air is found to be reduced, the smell of the air supply has a peculiar smell, and normal people know how to maintain it. But there are some that are hard for customers to detect – if your vehicle is constantly in very congested road conditions, the oil service interval may be shorter than the established time. Because in this environment, the engine heat dissipation is not very good, and the combustion efficiency is also low.
To be honest, no matter how powerful the maintenance master is, it is difficult to accurately judge the status of each component during use, after all, no one will open the lid every day before driving, check the status of the oil, remove the air conditioning filter to see if it has any dust. This is where a system needs to monitor the condition of the vehicle in real time.
This system, BMW called CBS, Condition Base Service, translates to the vehicle condition maintenance service system. The system detects the condition of the vehicle at any time and assesses the vehicle's maintenance needs according to the vehicle's mileage, climate, and the consumption status of parts and oil, and notifies the driver of the routine maintenance or inspection items that should be done.
Don't think of this system as a "landlord" who asks you to spend money every time it comes up. In fact, it's secretly saving you money. After all, it can check that the parts are "nearing life", and it can also find out those parts that need to be replaced when they are due, but they are actually "old and strong".
In bmw's official words: "Just go to an authorized dealer when your car really needs maintenance to reduce unnecessary expenses." ”
Just like the spark plug, many manufacturers have asked for about 20,000 kilometers to replace the spark plug, but it turns out that many of the replaced spark plugs are far from the end of their life. At this time, if the CBS has not been prompted, you can always use it with confidence and avoid waste.
"Only do the necessary maintenance", this sentence is very eye-catching on the official website of BMW after-sales service.
3
Why should we choose original parts whenever possible for maintenance?
"The whole world knows that the original parts are good, but not many people are willing to buy them." I teased with Wei Gong.
"It is undeniable that the automotive aftermarket is now very developed, and you can find sub-factory parts for all kinds of accessories on the car. But what I want to say is that if you can choose the original parts, try not to choose the auxiliary parts, even if it is a small accessory such as a wiper and an air conditioning filter. After all, this is not the same thing, whether it is quality, or adaptability, the sub-factory parts are far less than the original parts. Wei Gong said.
First of all, the official maintenance cycle is based on the quality of their own accessories, if you use the sub-factory parts, the quality requirements do not meet the requirements of the vehicle design, it will disrupt the entire maintenance cycle.
For a simple example: just mentioned that the amount of dust is the only factor that determines the air conditioning filter, if the dust capacity of the air conditioning filter does not meet the requirements of BMW original factory, it has been blocked before the replacement cycle, which is a kind of harm to the car and people.
Secondly, the sub-factory parts are very cheap, but its quality, functionality, life requirements... There may be a big gap with the original parts, after all, even the smallest original parts have to go through the official strict verification system, and the deputy factory parts do not have this treatment.
Or take the air conditioning filter element as an example, BMW's original air conditioning filter filter precision can go to PM1.0, the relevant standards have been tested by the vehicle regulation level, and many of the sub-factories on the market do not say the car standard level test, even the functional level is far less than the original factory parts, do not believe you see how many air conditioning filter elements can have PM1.0 filtration capacity.
In this mature business society, what you get for is always the truth.
Don't underestimate the filtration capacity of PM1.0, it is not easy to achieve this degree of filtration accuracy while ensuring the air volume.
In addition, the sub-factory parts are far from the original parts "fit". This truth is actually not difficult to understand, after all, many things on the vehicle are non-standard parts, the specific parameters are only known by the main engine factory, how to accurately measure the sub-factory parts, and use the more accurate molds, it is difficult to have the accuracy of the original parts.
Taking the wiper as an example, many people always feel that something is wrong after using the vice factory wiper. The reason is that there is no other reason, because the curvature of the wiper blade must be consistent with the windshield of the original car to fit closely and effectively clean the smudge; in addition, when the vehicle optimizes the wind resistance, the wiper will be taken into account, and the selection of sub-factory parts may affect the aerodynamics of the vehicle and increase the noise when driving at high speed.
It is also because the original parts are much better than the auxiliary parts, so many auto parts merchants on the Internet will be under the banner of "original parts". These "original parts" are honestly difficult to distinguish between true and false, and they will only be known after a long time, but it is too late to defend their rights at that time. Therefore, for consumers, the safest way is to buy through official channels.
Car maintenance is a university question, and each component can be written in a separate article, so it is difficult to cover it all in one article. But through the introduction of Wei Gong, we learned the basic logic of car maintenance and pit avoidance, it is estimated that even if you do not maintain the article, you know how to avoid the trap of car maintenance and rational consumption.
The following are 20 multiple choice questions about car maintenance provided by BMW, although many of them are aimed at BMW, but the automotive industry has some commonalities, and it is not difficult to learn from each other. So, if you want to know that your maintenance knowledge is not passed, you can try to answer the following 20 multiple choice questions, and the answer is at the top of the comment area.
Text | Male
(This article is the author's personal opinion only and does not represent the position of DearAuto.) )
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Mr. Li Guoyong of Guangdong Green Law Firm