Just follow the instructions. It's the most worry-free.

These forms of mechanical oil filtration actually give time.

First of all, you have 1 copy of the replacement cycle of engine oil, machine filter, air filter and air conditioner filter element when you buy a car, which is called "maintenance manual".

It's usually in your glove box. There are tables, which are clearly written. Your own car, according to the schedule, does not advance, does not postpone, just like that, is the most accurate.

Different models have different regulations. Take the top models as an example.

Nissan Sylphy is guaranteed for 3 months or 2.5km for the first time, and then the oil and machine filter are changed every 5km or 6 months 1 time.

Volkswagen LaVida is guaranteed for 6 months or 5 thousand kilometers for the first time, and then every 10 thousand kilometers or 1 year, whichever comes first.

In terms of air filters, the two cars are also different. Xuanyi 1 time 1 10,000 km, LaVida 20,000 km.

If you are worried that the 4S shop will cheat when there is something wrong with the car, will it not be ready for anything, then during the warranty period, it is recommended to do the items mentioned in the manual in the 4S shop, which is more worry-free.

Try not to float too much during the oil change interval.

The maintenance interval should be as good as possible according to the manual, and avoid wrangling.

For example, oil is what we often say to do maintenance. A little more than a few hundred kilometers, generally nothing.

But if today is fine, the day after tomorrow will be fine, and if you accidentally turn it into next year, it will really damage the engine.

Shi Qizhe and others published 1 paper "Experimental Analysis of Automobile Engine Lubricating Oil Deterioration" in the Journal of Automobile Practical Technology, in which the oil aging experiment was carried out with a real vehicle.

It is found that the service life of mineral oil and semi-synthetic engine oil is almost the same as the specified oil change cycle, which is about 6,000 km and 8,000 km respectively, and all the indexes also decrease rapidly, resulting in engine wear.

Synthetic engine oil has reached 9000 km, the engine has no large amount of sundries, and all indicators are within the normal range.

Therefore, if you use mineral oil or semi-synthetic engine oil, you need to pay more attention and try to change it at the specified time and kilometers, which will be better for the engine.

If you need an overhaul, just read your own manual.

The car has been driving for a long time, the warranty has passed, and it needs great maintenance. In fact, you can refer to the maintenance manual of our car for specific projects.

The form also says: the replacement cycle of spark plug, oil filter, antifreeze, brake oil and transmission oil is clearly written, and each one is written.

In some manuals, what type of specific accessories should be used is indicated.

And like spark plugs, antifreeze, and gasoline filter elements, the replacement cycle is also very different. For example, it is also 60,000 kilometers of maintenance, and different car projects are very different.

Spark plug, 1.5T Honda Civic, the book says 65438+100000 kilometers, but 1.4T Volkswagen LaVida, 20000 kilometers will be replaced.

"Maintenance manual? People who didn't turn over the dictionary before, let me see the maintenance manual? " "I put it away, and I don't know where the maintenance manual went."

Never mind, you can also check it online. When you click on the corresponding model, you can see the relevant information.

Which should be decided according to the actual mileage and wear and tear.

Parts where actual wear can be seen.

As mentioned above, all parts have a clear replacement cycle. According to the instructions, it will basically not be cheated. Don't trust those who say "Be good to the car early". It is best for cars to follow suit.

But some parts are hard to say, such as tires. Everyone's driving habits are different, and the time to change them depends on the actual situation.

Just like the same shoe, different people wear it and walk in different styles, right? The weight is different, right? Take a different road, right? Some people wear it well for two years, and some people have problems in three months, which is very different.

The tires look very convenient. There is something called "wear marks" in the patterns and grooves. The protruding piece is almost flush with the ground and needs to be replaced.

Like brake pads and brake discs, we generally can't see them. Master turned on the flashlight on his mobile phone and looked at them. We don't know which direction he is looking at, and we can't judge, so it's easy to be fooled.

In fact, brake pads and brake discs also have obvious wear marks. Many brake pads have a gap in the middle, and when it is almost smooth, it means it is time to change.

Some brake pads are interesting. When the brakes are worn to the back, you can hear the rubbing sound of metal iron when you step on the brakes to remind us to change the brake pads.

"Squeak", you always want to repair the car when you hear this sound, right?

When the master tells us that "this will almost be changed", you should ask him "How long can you hold on?"

What can't be said is nonsense, and even if something is said, there is no concept at all. Isn't that what I earn by changing parts today?

Some parts are recommended to be inspected and replaced according to the actual situation.

There are also some parts, such as transmission oil and coolant. Some models say that they are directly maintenance-free, which is not easy to believe.

It's easy to understand that the coolant is low and needs to be replenished. The matter of transmission oil is more complicated.

For example, the owner's manual of 202 1 Hyundai ix35 says: "No inspection, no maintenance" for automatic transmission oil. I said so myself.

But when we went to repair, the master told us that "the gearbox oil had better be changed", which was really not necessarily because the master lied to us.

This modern ix35, we directly asked their customer service in the official after-sales service center, and the answer was this: it is recommended to replace it 60,000 kilometers.

What you see is different from what the maintenance manual says. In the previous video, we actually asked once, and the answer is the same as this year. It doesn't seem to be an expression error or a policy change.

In the owner's manual, it can be written on the form that maintenance is not needed, but in fact, the fine print is a notice: the driving conditions are not good, and it is best to check 65438+100000 km.

Therefore, even if it is a maintenance-free gearbox, it is recommended to check it when it is 6 to 65438+ 10,000 kilometers. If the oil is too dirty, it should be replaced.

This is like, when a person is born, our teeth are maintenance-free for life, but actually there are cavities or something. If something goes wrong in advance, you have to go to the dentist, right?

But most people's teeth can be used for a long time, so they are maintenance-free.

Which projects are pure fudge?

What I just said is normal. I can judge whether I want it, where I want it, and how much it costs. Are there any completely unnecessary projects? There are also some.

If you see the words "cleaning" and "maintenance" on the maintenance list, pay attention.

It is also recommended that we make this thing when there is nothing wrong with the car, that is, when they want to buy a house, make money, pay rent and pay wages.

Simply put: turbine cleaning, power upgrading and maintenance, tire maintenance and tire life extension actions ... the more you listen, the less necessary it is. The real maintenance project is simple.