What is the Michelin run-flat tire symbol?

Can Vehicle Annual Inspection Be Conducted in Another City?

Vehicles can undergo annual inspection in another city. After September 1, 2018, cross-province annual inspections for small cars, trucks, and medium-sized buses have been fully implemented. Applicants can directly conduct the inspection in a province other than where the vehicle is registered and apply for the inspection compliance mark without needing to go through the entrustment inspection procedure. Materials required for vehicle annual inspection include: "Motor Vehicle Inspection Mark Application Form"; Motor Vehicle Driving License; Compulsory Traffic Insurance Certificate; Vehicle and Vessel Tax Payment or Tax Exemption Certificate; Owner's ID Card. For company-owned vehicles, the agent's information is also required, including the original driving license, copy of compulsory traffic insurance, Organization Code Certificate of the People's Republic of China (with fresh seal), Power of Attorney (with fresh seal), and a copy of the agent's ID card. Results of the annual inspection include: For vehicles that pass the periodic inspection, stamps are affixed to both the driving license and the "Motor Vehicle Periodic Inspection Form." Vehicles that fail the periodic inspection must be repaired within the specified time. If they still fail after the deadline, the vehicle management authority has the right to confiscate the license plate and driving license of the unqualified vehicle, which means the vehicle cannot be driven on the road or transferred to another jurisdiction.

13

4

Share

How often should engine oil be changed for frequent highway driving?

If you frequently drive on highways, it is recommended to change the engine oil every 6,000 to 10,000 kilometers, as regular oil changes help maintain optimal engine performance. Here are some methods to determine when the oil needs to be changed: Smell test: Pull out the dipstick and bring it close to your nose. If you detect a strong sour smell, it indicates the oil has deteriorated and should be replaced. Rub test: Rub the old oil between your thumb and index finger repeatedly. If it feels smooth with minimal abrasion and no friction, it is still good. If you feel impurities, poor viscosity, or even a gritty sensation, it should be replaced. Color test: Place a drop of oil on a clean white filter paper. After the oil seeps through, good-quality oil will leave no residue, feel dry and smooth, and show a clear yellow diffusion ring. If the oil appears dark brown with impurities, it should be replaced. Light test: Hold the dipstick at a 45-degree angle under a light source and observe the oil drop. If the drop is clear with no visible metal particles, the oil is still good. If there are many metal particles, it should be replaced.

16

4

Share

Is a Driver's License Required for Motorcycle Refueling?

Motorcycle refueling does not require a driver's license. Driver's License: The Motor Vehicle Driver's License of the People's Republic of China, abbreviated as driver's license or 'driver's permit,' is a certification required by law in the People's Republic of China for individuals who operate motor vehicles. Anyone driving a civil motor vehicle on public roads must apply for a motor vehicle driver's license in accordance with the law. The motor vehicle driver's license is valid nationwide. It records the holder's ID number, name, gender, date of birth, permanent address, nationality, permitted vehicle type code, initial issuance date, validity period, and management records. It also includes the issuing authority's seal, file number, and the holder's photo. The design of the motor vehicle driver's license is stipulated by the Ministry of Public Security. Related Information: Starting from June 1, 2021, the 'slope parking and starting' item in the subject two test for small automatic transmission vehicle driver's licenses will be canceled. The interval for scheduling the subject three test will be adjusted from 30 days after passing subject one to 20 days. For those applying for additional licenses for large and medium-sized passenger and truck vehicles, the interval for scheduling the subject three test will be adjusted from 40 days after passing subject one to 30 days.

18

5

Share

How Many Hours Does a Car Battery Need for Trickle Charging?

It is best to charge a car battery for 10-15 hours. Fast charging (constant current charging). Many car owners believe that fast charging can save time, taking only 3-5 hours; however, this is not the case. Fast charging only quickly activates the surface of the battery, while the interior of the battery is not fully charged. Below are some additional notes on car battery charging: 1. The car cannot be completely powered off. Therefore, if using a charger to charge the battery, it should be connected directly to the battery without removing it. Otherwise, data loss may occur, requiring initialization, commonly known as decoding or pairing. 2. If the car battery warning light is on, it needs to be charged promptly. For a running car, charge it at 1500 RPM for over 60 minutes, then at over 1900 RPM for another 60 minutes or more. 3. If the car is not used for a long time, the battery loses about 1% of its charge daily. If the battery remains connected to the car without being removed, the car maintains a minimum current (commonly referred to as 'sleep' current) of about 80mA. If there is an anti-theft alarm, it will consume additional power. Generally, about 2~3% of the battery's charge is consumed daily.

6

2

Share

Do You Need to Press the Clutch When Downshifting a Manual Transmission?

When slowing down a manual transmission car, you do not need to press the clutch. However, when braking during driving, each gear must maintain a speed above the minimum threshold; otherwise, you should press the clutch to prevent stalling. Introduction to Upshifting Timing: Accurately speaking, it should be determined based on the vehicle's speed and the engine's RPM. Start in first gear and shift to second when the speed reaches around 10 km/h; shift to third when the speed reaches 20-35 km/h in second gear; shift to fourth when the speed reaches 35 km/h in third gear; use fourth gear when the speed is between 35-45 km/h, and shift to fifth when the speed exceeds 45 km/h. When accelerating by pressing the throttle, the engine's RPM will also increase. When the speed is sufficient and the engine RPM is between 2500-3000, you can press the clutch to shift gears. Introduction to Downshifting Timing: Downshifting in a manual transmission is also based on the same vehicle speed. Use fourth gear below 50 km/h, third gear below 40 km/h, second gear below 30 km/h, and first gear below 20 km/h. To reduce the jerking caused by mismatched RPM and speed during downshifting, you can slightly press the throttle to raise the engine RPM to around 2000.

10

5

Share

What are the Four Major Mechanisms and Eight Major Systems in an Automobile?

An automobile engine consists of only two major mechanisms. Below is a detailed introduction to these two mechanisms and the eight major systems: 1. Two Major Mechanisms: (1) Crank-Connecting Rod Mechanism: The crank-connecting rod is a crucial component of an automobile engine that realizes the working cycle and completes energy conversion. (2) Valve Train Mechanism: The function of the valve train is to open and close the intake and exhaust valves at the right time according to the engine's working sequence and process, allowing the combustible mixture or air to enter the cylinder and expel the exhaust gases from the cylinder, thereby achieving the gas exchange process. 2. Eight Major Systems: (1) Fuel Supply System: The function of the fuel supply system is to deliver diesel and air into the cylinder separately, forming a mixture in the combustion chamber for combustion, and finally expelling the exhaust gases after combustion. (2) Ignition System: In a gasoline engine, the combustible mixture in the cylinder is ignited by an electric spark. For this purpose, a spark plug is installed on the cylinder head of the gasoline engine, with its tip extending into the combustion chamber. (3) Lubrication System: The function of the lubrication system is to deliver a certain amount of lubricating oil to the surfaces of relatively moving parts to achieve liquid friction, reduce frictional resistance, and minimize wear on the components. It also cleans and cools the surfaces of the parts. (4) Cooling System: The function of the cooling system is to dissipate part of the heat absorbed by the heated components in a timely manner, ensuring the engine operates at the most suitable temperature. (5) Intake System. (6) Exhaust System. (7) Starting System: The entire process from when the crankshaft begins to rotate under external force until the engine starts to idle automatically is called engine starting. The devices required to complete the starting process are collectively referred to as the engine starting system. (8) Engine Management System.

9

2

Share

What is the Michelin run-flat tire symbol?

Can Vehicle Annual Inspection Be Conducted in Another City?

How often should engine oil be changed for frequent highway driving?

Is a Driver's License Required for Motorcycle Refueling?

How Many Hours Does a Car Battery Need for Trickle Charging?

Do You Need to Press the Clutch When Downshifting a Manual Transmission?

What are the Four Major Mechanisms and Eight Major Systems in an Automobile?

Is the Temporary License Plate Still Valid After the Metal Plate Arrives?

What is the 0-100 km/h acceleration time of the new Changan CS75?

What Does the P in a Car Stand For?

What Causes a Car to Stall and Fail to Start?