Seeing is believing when it comes to car maintenance
Cars generally need maintenance once every 3 months. This person said that when regular repair shops on the market perform maintenance on vehicles, they generally determine the maintenance content based on the condition of the vehicle and the owner's use of the vehicle. The source revealed that when some informal repair shops perform vehicle maintenance, they will high-soundingly tell car owners to follow the instructions in the car manual. This statement seems very professional, but in fact it is not.
He said that this is because the instructions in the vehicle manual are based on common conditions: car owners should replace parts after driving 5,000 to 10,000 kilometers. Therefore, many car owners will choose to do maintenance or replace parts after 5,000 kilometers. In fact, for car owners who only drive in urban areas, as long as maintenance is performed within 10,000 kilometers, it will not cause any loss to the vehicle. He emphasized that he once made a rough calculation. If a repair shop followed the lower limit of the instructions for every vehicle that needed maintenance, the profit would be twice the original normal maintenance cost.
The third filter is most easily manipulated when replacing it
The third filter of the car is most easily manipulated. This person mentioned that when the car is being maintained, the third filter must be replaced. However, some repair shops often do some tricks when replacing the third filter on the vehicle. Car owners generally have no way of knowing the actual situation of replacing the third filter, and they don’t care how many they have replaced. It all depends on what the repair shop says! Therefore, some irregular repair shops will cut corners and only replace at most two of the three filters. In order to increase profits, either the air filter or the gasoline filter is omitted. Generally speaking, the third filter should be replaced once every 15,000 to 20,000 kilometers of the vehicle. In other words, in terms of the frequency of maintenance, replacing one every other time is enough. This person thinks.
Changing engine oil also requires a lot of thinking
In addition, the person also revealed that in order to save money, repair shops will also use a lot of thinking when changing engine oil. Each vehicle requires different amounts of oil. Generally, Jetta needs 4 liters of engine oil, Fukang needs at least 3.2 liters, and Alto needs about 3 liters. The standard is to fill the engine oil to the upper limit of the bend area of ??the dipstick. Currently, the only way to tell whether the engine oil has been changed is for the maintenance worker to measure the oil with a dipstick and then show the car owner the oil mark on the dipstick. However, this does not mean that new engine oil has been replaced. The reason is that in order to reduce costs, maintenance workers usually use a dipstick to measure the amount of engine oil remaining in the vehicle before injecting engine oil into the vehicle, and fill in the insufficient part. Just get it all together. When the car owner comes to pick up the car, the mechanic will take an empty used oil bottle and tell the car owner the brand and quantity of the oil to change.
Under normal circumstances, after the vehicle has been filled with engine oil, if the vehicle is not started, the engine oil will be slightly transparent when the car is opened. However, once the vehicle is started and driven, the engine oil will become turbid. Therefore, after the repairman adds engine oil, he will take the car out for a spin, so that the car owner cannot tell whether he has added a new bottle of engine oil or a mixture of old and new engine oil. Such mixed oil can cause damage to the vehicle.
Car owners must see what they see when it comes to vehicle maintenance
Regarding these situations encountered during vehicle maintenance, Section Chief Yan of the Vehicle Section of the Transportation Management Bureau of the Jiangsu Provincial Department of Transportation said that first of all, car owners must When performing maintenance, you must choose a repair station with comprehensive maintenance qualifications. A regular repair station must have an "Industrial and Commercial Business License", "Business Permit", "Technical Examination Certificate", and "Road Transportation Business License".
For vehicles that require secondary maintenance and vehicle repairs, only maintenance companies with Class I and Class II qualifications are eligible.
In addition, if you need to replace spare parts during the maintenance process, be sure to read the factory name, factory address, phone number, registered trademark, implementation standards and other items on the outer packaging, and indicate it on the repair order. Product model, place of origin, specifications; don’t ignore your right to know, see what you believe. At the same time, car owners can also specify the price according to the province's maintenance management system.
It is best for the car owner to sign three major items with the repair shop before maintenance: maintenance records, settlement list, and maintenance contract. This can be used as a basis in case of future disputes.
Chief Yan said that car owners can observe some details during acceptance inspection to test the effect of maintenance. For example, the bolts that are fixed or connected on a certain assembly should have the same number or model. Especially the bolts in key parts are not allowed to be replaced by other bolts.