Myths and Guidelines about Car Maintenance, Repair, and Usage

　　Maintenance

　　Car maintenance can be said as the first item that car owners need to know. Automobile is a durable consumer goods, from a new car to replace the car to use at least a few years or even more than ten years, and car maintenance directly affects the life of the car is an important part of the link can not be ignored.

　　First of all, the maintenance is not just a simple oil change and oil grid, because the car in addition to the power system and the transmission system, brake system, steering system, chassis suspension and so on. One by one, let's say.

　　Engine:

　　Maintenance of the engine is mainly to replace the oil and oil grids, air grids, gasoline grids, spark plugs, belts, etc., the replacement cycle of the belt is longer, but the expiration date must be replaced. Oil and oil grid usually only need to be in accordance with the requirements of the car manual above the regular replacement can be, for the replacement time and mileage, because most of the 4S store is required to 3 months or 5000 kilometers to replace a. 3 months to change this with a lot of automobile manufacturer's manual requirements of half a year to change a full half of the time, and the Internet, many people say that the foreign car can be a year or 1W kilometers to change a. So about this issue can be a lot of people, but also a lot of people, the engine is not the only thing that can be replaced. So about this issue can be said to be a variety of opinions. I believe that most cases in accordance with the manufacturer's instructions can be, most of the car is half a year or 5000 kilometers for a change, there are some cars are 7500 or 1w kilometers maintenance, and even 1w5 kilometers. So we have questions, why is the same gasoline car, add almost the same oil, how different manufacturers give the maintenance cycle difference so far? This question I also want to ask the manufacturer, I analyze from a technical point of view, you can think so: 5000 kilometers is the most conservative maintenance cycle, as long as it is a civilian car, no matter how harsh conditions, 5000 kilometers for an oil change is enough. 1w kilometers for a change is a relatively comprehensive considerations, such as going to the urban area and driving half of the high-speed car can be considered 1w kilometers for a change, only to go to the urban area of the car is not recommended 1w for a change. The oil is not recommended to be changed once in 1w. Those manufacturers who say 1w5 oil change in the manual, I think it is not clear about the situation of the majority of people in China with the car manufacturers, directly to Europe and the United States maintenance strategy copied over.

　　Theoretically speaking, the oil replacement cycle according to the mileage is not completely accurate, because the car's mileage and engine running “mileage” is not synchronized, sometimes the car is parked in the engine is still running, the car is slow and the car is fast engine conditions are very different, if you want to use an accurate engine maintenance cycle can be used to calculate the fuel consumption, such as how many liters of fuel consumed? To calculate, such as how many liters of fuel consumption for an oil change, which is both troublesome and unnecessary. This is both troublesome and unnecessary. Therefore, you can use this program for oil change intervals in general:

　　Use SL grade or above mineral oil or semi-synthetic oil.

　　Commute to and from work in the morning and evening rush hour in the city every day: 5,000 kilometers or half a year to change.

　　Often go to the smooth ring road and highway: 7000 public or half a year for a change, synthetic oil can be delayed to 1w kilometers.

　　According to this program maintenance of the engine, the mid-cylinder assembly (including piston connecting rod crankshaft mid-cylinder and other components) can be guaranteed 20w kilometers without mechanical problems.

　　About the choice of motor oil:

　　Oil viscosity, synthetic oil and additives:

　　If there are no special requirements, in non-ice and snow areas 5w-40 almost kill all engines, but still hope that you follow their own car's manual recommended oil viscosity, with the manufacturer's recommended specifications and viscosity in order to play the best performance. Those who have performance requirements and often run at high loads can use synthetic oils with higher high-temperature viscosity.

　　Many people struggle with whether to use synthetic or fully synthetic motor oil. For naturally aspirated engines used for daily transportation, mineral oils of SL grade or higher are fully capable of handling the task, while semi-synthetic oils can be considered for turbo engines. The engine speed of a car used for transportation seldom reaches 4,000 rpm, so there is no need to use fully synthetic oils. Full synthetic oils are for people who often push the gas into the floor.

　　As for those oil additives, they can be completely ignored. Car lovers who use mineral oil can consider adding a bottle of additive with cleaning function periodically before changing the oil. Those added to the oil together with the use of the oil is completely unnecessary, the performance of the oil has been completely enough to protect the engine, and no one has proven the effect of oil additives, regular use can extend the engine 10w kilometers life? No one knows, the situation now the oil itself already contains a variety of ingredients additives, so do not do for the performance of sales. Those engines with direct injection, reliable quality gasoline additives can be considered for regular use to properly prevent carbon buildup.

　　About belts:

　　Other than that, regarding spark plugs, air compartment, gasoline compartment, etc., just change them regularly according to the manual. Regarding the belt, it is the most easily overlooked, because whether it is the belt of the generator, air conditioning pump and other components, or the timing belt, the car can be used normally before it breaks, so many people think, the car is fine, what's there to change? But once it breaks, it's basically called a tow truck. That's why the belt needs to be replaced on a regular basis, in strict accordance with the manufacturer's requirements. Especially in some models, with the timing belt at the same time driving the water pump, water pump bearing problems jammed, timing belt broke, the consequences are the valve top crooked. Call a tow truck at the same time repair costs are not low. So when the car appeared some strange sound, should be checked as soon as possible to the 4s store, timing with metal chain car does not have this problem.

　　Various fluids:

　　In addition to oil, there are many other fluids used in cars, namely: brake fluid, transmission fluid, steering booster oil and coolant. Rear and 4WD cars also have tailgate fluid. Well, it's still changed regularly. The main focus here is on brake fluid and transmission fluid.

　　There are a lot of people who don't change their brake fluid or change it only after it has expired for a long time, such as taxi drivers and driving instructors who do this to save money. But they do not know that the deterioration of the brake fluid contains a lot of water, reduce the boiling point of the fluid is not safe at the same time, corrosion of the brake system components, the sub-pump stuck, oil seal leakage is so.

　　Transmission fluid, focusing on the automatic transmission fluid, because the automatic transmission fluid specifications of various manufacturers are different, the fluid can not be common with each other, we recommend that we are still in the 4s store to replace the original fluid, maintenance cycle so long project is not necessary in order to save a hundred or so dollars for small losses, the fluid added the wrong or inferior transmission fluid, is likely to lead to damage to the gearbox, the automatic transmission repair costs The cost of repairing an automatic transmission is no less than an engine overhaul. So we should consider it carefully. The general car in the 4s store change is not expensive.

　　Brake maintenance:

　　Brake maintenance is mainly to prevent brake discs from grooving, brake pads wear abnormally, inhibit noise and so on. Maintenance intervals are not stated in many manuals. My suggestion is that for those who have maintenance in a 4s store, do it once for 2w kilometers for a joint venture car and once for 1w kilometers for an autonomous car of average quality. If you are not in the 4s store maintenance and can not find a reliable repair shop friends, I think it is better to check the main. Brake pump pins need to use special grease, many places use ordinary grease, is not standardized, ordinary grease can not withstand the high temperature of the brake, there may be deterioration caused by the distribution of pump pins jammed, which leads to brake pads bias wear.

　　About the chassis:

　　Chassis generally does not have any regular maintenance program, the main consumables are shock absorbers, a variety of rubber covers, ball head, etc., just in the warranty period these things are not supposed to be bad, bad claims can be, not bad to check regularly, if there is a strange sound in time to the 4s store to check. Some people like to add engine guards and chassis armor, chassis armor can be done to slightly improve the role of static and rust. Engine guard, often go unpaved road friends can consider installing, seldom go bad road don't consider, nothing good.