What are the precautions for car air conditioning?

How Does the Oil Film on the Windshield Form?

Car glass oil film is formed due to exposure to oil stains and dust in the air, and not being thoroughly cleaned for a long time, leading to the formation of an oil film. Methods for removing oil film from the windshield: The oil film is very stubborn and cannot be completely removed by ordinary car washing. Special oil film removers and soft cloth wiping are required for thorough cleaning. Precautions to avoid oil film formation: When parking, try to choose a relatively empty parking space, avoiding areas under trees or near hotel exhaust pipes, as chewing gum, bird droppings, and kitchen fumes are the most significant factors in oil film formation. If the vehicle is not used for a long time, purchasing a car cover to protect the body can be very effective.

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What is the Definition of a New Car vs. a Stock Car?

Stock cars generally refer to vehicles that have not been sold for more than three months after leaving the factory. There are two common types of stock cars: those that have spent the stock period in the manufacturer's warehouse and those that have spent the stock period in the dealer's warehouse. When purchasing a stock car, it is essential to carefully inspect the vehicle's condition. Here are some methods to identify a stock car: 1. Check the production nameplate: Located below the B-pillar on the right side of the vehicle, the nameplate displays the production date and engine parameters. 2. Examine the glass: The production date and year of the glass are marked on the car windows. 3. Inspect the tires: Determine the production time by checking the tire's manufacturing date. 4. Look under the hood: Open the engine compartment to check if the engine is clean.

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What's the Difference Between Four-Wheel Drive and Two-Wheel Drive?

Two-wheel drive (2WD) vehicles refer to those where only two wheels are responsible for driving the vehicle's movement. Front-wheel drive (FWD) means the two front wheels are responsible for driving, while rear-wheel drive (RWD) means the two rear wheels are responsible for driving. Four-wheel drive (4WD) vehicles refer to those where all four wheels have driving functionality. Full-time 4WD means all four wheels are always in driving mode. Part-time 4WD allows the driver to manually switch between 4WD and 2WD. Automatic 4WD means the switching between 4WD and 2WD is controlled by the vehicle's onboard computer. The main differences between 2WD and 4WD are as follows: 1. Power Performance: Since all four wheels are driving wheels, 4WD vehicles have a significant advantage in climbing hills, starting, and accelerating, making them more powerful. 2. Handling: Front-wheel drive vehicles tend to understeer, while rear-wheel drive vehicles tend to oversteer. 4WD vehicles offer better handling. 3. Off-Road Capability: 4WD vehicles have better off-road capability. Even if 1-2 wheels lose traction, the other driving wheels can still pull the vehicle out of difficult road conditions. 4. Fuel Efficiency: 2WD vehicles are more fuel-efficient because 4WD vehicles have more complex drivetrain structures, resulting in greater power loss. Additionally, their drivetrain components, such as the transfer case and extra differential, are heavier, which increases fuel consumption. 5. Cost: 4WD vehicles have more complex drivetrain structures, leading to higher manufacturing costs. Their drivetrain components also require maintenance, making 2WD vehicles cheaper to maintain.

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What is the length of a 4x2 and 8x4 truck?

A 4x2 and 8x4 truck has a cargo compartment length of 9.6 meters and a width of 2.3 meters. Below is relevant information about automobiles: 1. Definition of an automobile: According to the latest Chinese national standard "Terms and Definitions of Motor Vehicles and Trailers" (GB/T 3730.1-2001), an automobile is defined as follows: A non-track vehicle with 4 or more wheels, powered by an engine, primarily used for transporting people and/or goods; towing vehicles for transporting people and/or goods; or for special purposes. 2. Introduction to domestic automobile brands: Domestic automobile brands include Hongqi, Changan, Great Wall, Chery, Geely, Roewe, BYD, etc.

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Why does the car shake when accelerating from 50 to 60 km/h?

Car shaking during acceleration between 50-60 km/h is primarily caused by a dirty throttle body or excessive carbon buildup in the fuel injectors and intake manifold. Below are relevant explanations about car shaking: 1. Causes of car shaking: Car shaking can occur during startup, idle, or high-speed driving. Startup shaking mainly results from insufficient fuel combustion, leading to inadequate power output and low ignition energy. During startup, especially when fuel and lubricant temperatures are low, more throttle input is required to meet power demands. As spark plug electrode gaps gradually widen, ignition energy decreases, resulting in poor fuel atomization. 2. Explanation of idle shaking: There are multiple reasons for car shaking during both cold and warm starts. Beyond insufficient fuel combustion, it could be due to abnormal engine coolant temperature, low cylinder pressure, or clogged fuel injectors. If startup shaking occurs, it's recommended that owners promptly visit a 4S shop for inspection and repair.

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Is a 10-Horsepower Difference Noticeable in Cars?

Is a 10-horsepower difference noticeable in cars? Yes, a 10-horsepower difference is noticeable in cars. Here is some relevant information about horsepower: 1. Introduction to horsepower: Horsepower is a commonly used unit for measuring power in engineering. It was proposed by James Watt. 1 horsepower is approximately equal to 735 watts. Generally, it refers to metric horsepower rather than imperial horsepower. 1 horsepower equals the work done to lift 75 kilograms by 1 meter in 1 second, which is also equal to 0.735 kilowatts, or metric horsepower. 1 imperial horsepower equals 550 foot-pounds per second, which is 76 kilogram-meters per second, or 0.746 kilowatts. 2. Metric horsepower: Metric horsepower, also known as PS, is entirely a human-defined value, set very close to imperial horsepower. 1 metric horsepower is defined as the work done to lift 75 kilograms by 1 meter in 1 second. That is: 1 metric horsepower = 75 kilogram-meters/second = 735 watts.

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What are the precautions for car air conditioning?

How Does the Oil Film on the Windshield Form?

What is the Definition of a New Car vs. a Stock Car?

What's the Difference Between Four-Wheel Drive and Two-Wheel Drive?

What is the length of a 4x2 and 8x4 truck?

Why does the car shake when accelerating from 50 to 60 km/h?

Is a 10-Horsepower Difference Noticeable in Cars?

What to Do If You Fill Up with the Wrong Fuel?

What maintenance is required for a vehicle at 40,000 kilometers?

What Causes a Car to Fail to Start After Prolonged Inactivity?

What are the consequences of not changing engine oil?