What is the 0-100 km/h acceleration time of the Hongqi H5?

What are the reasons for engine oil deterioration?

Engine oil deterioration occurs due to the following reasons: 1. Air filter damage. The function of the air filter is to filter impurities from the air entering the engine, thereby purifying the air. Generally, a standard car has only one air filter, while luxury cars may have two. The air filter is located inside the air filter box in the engine compartment. To access the air filter, the air filter box must be opened, and it is secured either with clips or screws, both methods ensuring the box is sealed properly. 2. Oil dilution and emulsification due to water. Water can enter the cylinder block or crankcase due to a damaged cylinder head gasket or other reasons. When the water content exceeds 0.1%, the antioxidants and dispersants added to the oil become ineffective, accelerating the oxidation process of the oil. When the oil contains a significant amount of water, its lubricating properties deteriorate, viscosity decreases, and the oil film's anti-friction effect weakens. In mild cases, this leads to premature oil deterioration and rusting of components, while severe cases can cause engine seizure or bearing failure, leading to serious mechanical accidents.

20

4

Share

Can I Change the Coolant Myself?

You can change the coolant yourself. The specific steps are as follows: 1. First, drain the original coolant completely. Locate the drain valve of the car's cooling system, usually at the bottom of the car. Open the expansion tank cap, lift the car, and unscrew the drain plug to drain all the coolant. 2. After draining the coolant, fill the radiator and cooling system with clean water to flush out any remaining residue until clear water flows out from the drain. 3. Tighten the drain plug and pour the new coolant into the expansion tank, filling it to a level between the MAX and MIN marks. 4. Close the tank cap, start the car, and the coolant level in the tank will gradually drop. At this point, you need to add more coolant again, still maintaining the level between the MAX and MIN marks.

14

5

Share

What are the symptoms of a faulty car temperature sensor?

Here are the symptoms of a faulty car temperature sensor: 1. The engine may overheat, and a yellow coolant temperature warning light will appear on the dashboard to alert the driver for inspection. When the car temperature sensor is damaged, it must be repaired promptly to prevent potential safety hazards during vehicle operation. 2. The car may experience difficulty starting when cold, as the system incorrectly determines that the engine oil and coolant temperatures are too low, preventing normal operation and making the engine hard to start. The car temperature sensor controls the temperature of the engine oil and coolant, thereby helping the engine run more efficiently.

2

5

Share

Does Transmission Fluid Need to Be Changed?

Transmission fluid does need to be changed. Here are the relevant details about transmission fluid replacement: 1. Dry dual-clutch transmissions and manual transmissions have similar structures, so they both use synthetic transmission fluid with a service life of approximately 150,000 kilometers. Most automatic transmissions require fluid replacement every 60,000-80,000 kilometers. 2. The transmission fluid replacement interval is only a general guideline. Due to factors such as driving conditions and habits, the condition of the transmission fluid may vary. If the vehicle experiences symptoms like rough shifting, strong jerking sensations, or significantly increased noise during operation, it's necessary to check whether the transmission fluid needs replacement. 3. There are three common methods for changing transmission fluid: (1) Gravity drain: Similar to engine oil changes, this involves loosening the transmission drain plug to release the fluid, then refilling through the fill port. The drawback is that gravity draining doesn't completely remove all old fluid. (2) Machine flush: A transmission flush machine connects to the transmission's fluid lines, using new fluid to push out the old fluid from inside the transmission. The advantage is more thorough replacement, while the disadvantages include being time-consuming and requiring more transmission fluid. (3) Removing the transmission pan: The advantage is the ability to clean or directly replace the transmission filter, with relatively thorough fluid replacement. The drawback is the more complicated installation process.

18

0

Share

What does 91h on a tire mean?

Tire 91h indicates that the maximum load capacity of a single tire is 615Kg, and the maximum speed it can withstand under the specified load is 210KM/h. Here are the relevant details: 1. 91 is called the load index, and the maximum load capacity of 615Kg can be determined by referring to the tire load index chart. 2. H is called the speed rating. Additional information: Whether it's the speed rating or the load index, during daily driving, you should operate within the specified limits of the speed rating or load index. Otherwise, there could be significant safety hazards. Additionally, when replacing tires, it's important to note that you should not mix tires of different types, models, or tire structures.

8

4

Share

Is the Teana clutch a dry type?

Teana clutch is a dry clutch. The clutch plate is a composite material primarily functioning through friction while also meeting structural performance requirements. Automotive friction materials are mainly used to manufacture brake friction plates and clutch plates. The working principle of the clutch is as follows: 1. Disengaged when depressing the clutch pedal: When starting the vehicle, the driver depresses the clutch pedal, which pulls the pressure plate backward, separating it from the friction plate. At this point, the pressure plate does not contact the flywheel, eliminating relative friction. 2. Fully engaged when not depressing the clutch pedal: During normal driving, the pressure plate tightly presses against the flywheel's friction plate, achieving maximum friction between them. The input and output shafts maintain relative static friction with identical rotational speeds. 3. Partially engaged during semi-engagement: The friction between the pressure plate and friction plate is less than in full engagement. The pressure plate and flywheel's friction plate enter a sliding friction state, where the flywheel's speed exceeds the output shaft's speed, transmitting partial power from the flywheel to the transmission. In this state, the engine and drive wheels establish a flexible connection.

6

3

Share

What is the 0-100 km/h acceleration time of the Hongqi H5?

What are the reasons for engine oil deterioration?

Can I Change the Coolant Myself?

What are the symptoms of a faulty car temperature sensor?

Does Transmission Fluid Need to Be Changed?

What does 91h on a tire mean?

Is the Teana clutch a dry type?

Where is the car air conditioning compressor located?

How Early Can You Schedule the Subject 3 Driving Test?

How to Distinguish Between China 5 and China 6 Emission Standards?

Can You Still Drive When the Engine Malfunction Indicator Light Is On?