1. Can the oil change interval be extended?

At present, most domestic car manufacturers require their cars to change their oil every 5,000 to 7,500 kilometers, while in foreign countries, the interval is generally 10,000 to 15,000 kilometers. Some new cars in Germany, the oil change cycle is increased to 30,000 kilometers. Therefore, many car owners think that the oil change cycle stipulated by domestic manufacturers is too conservative, and it can be properly extended to save money and trouble.

However, those who disagree say that the oil should be changed at the prescribed time. If the oil is not changed on time, it will significantly reduce the wear resistance and corrosion resistance of the oil, and then affect the life of the engine.

Experts claim

Automobile service expert: the reason why most of the domestic production of the car oil cycle is shorter than foreign, mainly considering China's automobile use environment. If you choose high-quality lubricating oil, it can be appropriately extended in the use of less frequent traffic jams and a cleaner environment. If you drive in dusty areas for a long time, even if you use high-quality lubricating oil, you should not exceed the replacement cycle stipulated by the manufacturer and excessively extend the mileage of oil change (quotation parameters Picture Forum).

In addition, oil also has a shelf life, after the shelf life, oil will deteriorate, the use time of oil in the state of about three months. Therefore, sometimes the oil change is not all to see the mileage, but also to see the use of time. If your car has not been used for six months, you are also advised to change the oil.

2. Is it a relief or trouble to install an electronic alarm?

Many owners of new cars to get the important thing, is to love the car with electronic theft, they think that the possibility of new car theft, installed electronic theft is more "insurance". Next, a lot of anti-theft device can not only sound and light alarm, and still can cut off start, ignition or oil to guard against theft, insurance coefficient is higher. There are electronic anti-theft device can both find the car, the door is not closed prompt function, with the central control door lock can also open the door remote control, rich function, easy to use.

But many car friends do not regard this however, think that anti-theft device can not prevent the real car thief, next, a lot of anti-theft device is too sensitive, a bit of wind and grass move on the call, thunderstorm days, holidays more severe, mostly became a disturbing device. In addition, electronic alarm is also easy to bring hidden dangers to the car, because the installation of another circuit, which is easy to bring leakage, short circuit and other faults, and may even cause auto spontaneous combustion accidents, the loss outweighs the gain.

Experts claim

Automotive Service Specialist: Most of the electronic anti-theft devices you see on the market use relays to block engine controls, including ignition and fuel injection. For professional car thieves, this is very easy to crack, anti-theft function is not big.

Can choose a few technical excellent anti-theft products, but the price is not cheap. In addition, like car friends said to add electronic alarm to change the original car line design, this is really need to pay attention to, if improperly installed, will affect the sex of the vehicle, and even some will cause vehicle spontaneous combustion, it is recommended to find technical car beauty shop for installation.

3. Does the electric jet need a hot car?

Motorists are also divided on whether to heat up their cars in the morning, especially in winter when temperatures drop below freezing.

Some motorists say that all cars should heat up when they start in the morning. The reason is that when the engine is in a cold state, the lubricating oil is also very cold, and it cannot form an oil film for normal lubrication, and the severe wear can be imagined. The normal working temperature of the engine should be about 90℃. The temperature in the morning of winter is very low, and it is impossible to reach this temperature in the morning of summer. Without proper preheating, the damage to the engine is relatively large.

But there are car friends said, get up early the original geothermal car 3 minutes, that is the carburetor era. Today's cars are all electric. Not only do hot cars waste fuel, but three minutes of hot driving produces the same amount of pollution as driving tens of kilometers. Therefore, the correct way should be in the car after starting, as long as the engine oil lights can run, until the water temperature to reach the normal temperature and then accelerate. As for hot cars parked on the side of the road, in addition to causing environmental pollution, increased wear and tear, the engine carbon accumulation can be said to be all harm and no benefit.

Experts claim

Auto service Manager: No matter what car it is, it is desirable and beneficial to idle a hot car before starting. Especially when the temperature is low in winter, if the engine starts to go quickly, the lubricating oil in the engine cannot form an oil film for normal lubrication, which will indeed cause serious wear and tear to the engine. Therefore, spend two or three minutes to heat up the car, on the one hand can reduce the engine load, on the other hand can also improve the lubrication conditions and fuel combustion conditions.