Hello everyone! I recently received a question from a netizen。His car drove more than 360,000 kilometers in 7 years，It feels okay to open it，Is there anything to pay attention to? Is it necessary to change the car?

Average more than 50,000 kilometers a year，As a private car，It is indeed a relatively heavy degree of use。But actually put it in the larger range of "car"，There are many cars with long mileage。

For example, just a taxi.

The first Li Tuan took a domestic ride in a domestic ride，Run nearly 200,000 kilometers in four years，Learn from the driver's master，In addition to normal maintenance，Never repair，Pretty worry ~ Praise for domestic!

So，Long driving mileage，If you don't mean it, you must change your car，Old car can be very spiritual。Of course，The premise is to be maintained。

Everyone usually keeps maintenance for the car，Generally, it is a conventional "Machine Oil Three Filter"，That is to change the oil、Oil filter element、Air filter element、Air conditioning filter element，After changing it, you can live 10,000 kilometers (with 5000)。

And some old cars，Due to age、Mileage long，Many items that do not need to be done in normal maintenance，Also need to pay attention to，Actually like an old man。

Let's talk about these aspects with the group friends today. About the maintenance of old cars，First, the project will increase，Second is that many new cars are very regular maintenance，Nian first one long，I was disrupted。

Therefore, a regular check can be done regularly. Let's take a look at those who may affect driving safety，or items that cause severe failure，For example:

 

brake system

First of all, the brake，brake is the most important part of driving safety，But it is rarely touched by maintenance。

Among them, the most frequently replaced may be the brake pads and brake oil。but，SeabetBecause everyone has different driving habits、The road conditions usually travel are not the same，The degree of use of brakes is also different。So the suggestions given on the maintenance manual are generally "regular inspection"。

 

When driving or gently stepping on the brake, there will be sharp and harsh metal friction sounds，It means that the brake can be changed，Some cars will also have a brake fault light to light up。

If the brake foot feels soft，That is to discharge the air or change the brake oil for the brake oil.。 brake tray，Generally, everyone does not think it is a loss piece。It will also be during the use of the brake，Slowly grinding thin，But when will it be to change? This replacement standard is actually in the car，But everyone can't pay attention to。Carved a parameter on the brake disc Th, minimum thickness.

 

If you have a chance, you can take a look at the min marked on your brake disc What is it，How much is left to measure the ruler，Just know if it should be replaced。

 

line inspection

This mainly includes oil circuits and circuits。Most parts of the oil road are metal，But rubber will be sealed with rubber at some connections，Long time、Great temperature changes，Also aging、The possibility of leakage，Usually pay attention to whether there is oil exudation in the cabin。

The circuit is mainly to check whether the wire is damaged，If you exudate aside，Leaks while leaking，The risk of spontaneous combustion will increase greatly。Usually pay attention to the cleaning of the cabin，It is easier to see the leakage position。

 

Positive belt

Valor Time Belt is a rubber belt，When the carrier is opened，Let the air enter the cylinder，Power needs to cooperate with the movement of the piston。Because it is rubber，So it will also be aging。Generally 60,000 to 100,000 kilometers only need to be replaced。

If not cooperated well，When the valve is opening，The Pistons are just up.，Light, the valve is bent to death，Directly break it，Put the cylinder、Pistons scratch，or even a crankshaft deformation，The entire engine is scrapped。

Tire

Replacement of tires，For those owners Seabetwho have a long mileage driving, do not need to remind them。These old drivers generally know that you need to change the tires according to the wear marker in the middle of the tire line。

What is often negligated is those years very long，But the car that basically not drives much。 Tire is also rubber，Crack dense cloth，It will also be exposed with ultraviolet rays、Temperature changes and gradually aging，Crack dense cloth，Double the risk of tires。

Generally speaking, even if a tire is not used,，5 to 6 years has also reached the end of life。To drive safety，Still replace it as soon as possible。

These projects above will affect the safety of the car，and old cars often have some "small problems"，Although it will not make the car driving，But pay more attention，Can optimize driving quality、Extend the service life。

mainly lists the following aspects:

 

Transmission oil

The gearbox is the performance of a car、driving quality、Driving texture is important one component，There are many cars because of an unreliable、Not smart gearbox，Destroy the entire car。

Of course，Let's not talk about those gearboxes that are "wrong" in itself，I bought it because of the car，There is no way to change the gearbox，You can only change one of the same paragraph。

Transmission oil，What it plays lubrication、The role of heat dissipation。Transmission oil can actually be regarded as "motor oil"，It is similar to 0w20 like motor oil、5W40 This label。But the viscosity of the transmission oil is much larger，Generally from 70 to 90。Some loads are heavy、Performance cars with higher speeds，Even 140、160's viscosity。

(The oil viscosity used by a car with a limited slide differential (LSD) is 80W140) So，Machine oil needs to be changed regularly，Of course, the transmission oil is also needed，When it is aging、After becoming thinner, it will fail，Not only will wear out，It will also affect the quality of shift shift。According to the brand different，Generally, it will be replaced with 80,000 to 120,000 kilometers。As for those so -called "maintenance -free"，Just talk about it when he just talks。

I don’t pay attention to the life of the transmission oil，I will not let the car lie down immediately，But it will bring "chronic disease"，Once out of the outbreak，It is difficult to recover。Generally speaking, the price of changing a gearbox。

 

Carbon accumulation, spark plug, fuel filter

Put these samples together，Mainly because of the fault similar to them，All will cause dynamic losses。

Carbon accumulation is an old -fashioned topic，If it is not serious，It is necessary to clean up。serious，In addition to disassembling the engine to dig coal，There is no particularly good way to remove。

If the carbon accumulation is severe，will cause engine jitter、Lack of fire、Blasting, etc.