What is the difference between dry transmission oil and wet transmission oil?

What Are the Vehicle Annual Inspection Exhaust Emission Standards?

Here is an introduction to the vehicle annual inspection exhaust emission standards: The emission standards for light-duty vehicles were issued in July 1999 and revised in 2001. 1. GB18352.1-2001 "Limits and Measurement Methods for Emissions from Light-Duty Vehicles (I)" is equivalent to the EU 93/59/EC Directive, referencing part of the technical content of the 98/77/EC Directive, equivalent to Euro I, issued and implemented on April 16, 2001. 2. GB18352.2-2001 "Limits and Measurement Methods for Emissions from Light-Duty Vehicles (II)" is equivalent to the EU 96/69/EC Directive, referencing part of the technical content of the 98/77/EC Directive, equivalent to Euro II, implemented from July 1, 2004. 3. GB18352.3-2005 "Limits and Measurement Methods for Emissions from Light-Duty Vehicles (China III and IV Stages)" is partially equivalent to Euro III and was implemented in 2007.

13

3

Share

How often should the antifreeze in a new car be replaced?

New car antifreeze should be replaced every two years. Antifreeze, also known as antifreeze coolant, is a type of coolant containing special additives, mainly used in liquid-cooled engine cooling systems. It contains calcium chloride, methanol, ethanol, ethylene glycol, and glycerol. The method for replacing antifreeze is as follows: 1. Open the car hood after the engine has cooled down; 2. Open the antifreeze reservoir cap; 3. Lift the vehicle and open the radiator drain plug, drain the old antifreeze, and then reinstall the drain plug; 4. Lower the vehicle and pour new antifreeze into the antifreeze reservoir. Precautions for replacing antifreeze include: 1. Choose antifreeze with a low freezing point, high boiling point, and good anti-corrosion properties; 2. When replacing the antifreeze in the vehicle, ensure the old antifreeze is completely drained and the system is cleaned; 3. Check the hoses for any signs of aging and replace them promptly if necessary.

1

4

Share

Do You Need to Lift Off the Throttle When Using Paddle Shifters?

Paddle shifting requires lifting off the throttle. The paddle shifters are typically located behind the steering wheel. To operate them, simply push the gear into D, S, or manual mode. Some models equipped with paddle shifters include: 1. Audi A8; 2. BMW Z4 sports car; 3. Volkswagen Touareg W12 top sports car; 4. Cadillac CTS 2009 model; 5. Mazda RX8. The techniques for paddle shifting are: 1. Depress the clutch, lift off the throttle, when the speed is 32 km/h and the engine speed is 2500 rpm, the engine speed will start to drop after depressing the clutch and lifting off the throttle; 2. Quickly shift the gear lever from second to third gear. After shifting to third gear, the speed is 32 km/h. According to the speed ratio of 32 km/h and third gear, the clutch disc speed drops to 1686 rpm; 3. Observe the engine tachometer. When the speed drops to 1686 rpm, follow the operation essentials of releasing the clutch to enter the semi-clutch state.

9

0

Share

Can You Wash the Inside of a Car Hood with Water?

You should not wash the inside of a car hood with water for the following reasons: 1. It can easily damage the generator, potentially causing it to fail. 2. If the engine is hot, the sudden temperature change from cold water can cause significant damage. The engine block may crack due to thermal shock. 3. The engine compartment contains many electrical wires, which can be damaged by water and may accelerate aging. Precautions for using water to clean the engine compartment: 1. Cover the generator, distributor, brake fluid reservoir, etc., with a cloth or plastic bag. 2. Try to wash the engine after it has cooled down, and avoid using high-pressure water jets. 3. After washing, thoroughly dry the engine compartment with a clean cloth, especially the underside of the hood. 4. Do not aim the water jet directly at the air intake or electrical connectors.

10

2

Share

Where is the car sunroof switch located?

Generally, the sunroof switch is located near the front windshield at the front of the sunroof. There are two types of sunroof opening methods: rear tilt and rear slide. When pressing the sunroof switch, there will be an automatic pause when it is fully closed, which can be clearly felt. More details are as follows: 1. Closing the sunroof is simple—just hold down the close button until the sunroof stops moving completely, ensuring it is tightly closed. Special note: Keep holding the close button without releasing it. Before the sunroof fully closes, there will be a slight rear tilt action—continue holding the button at this moment (if you release and press again when the sunroof tilts back, it will switch to rear tilt mode). 2. Additionally, if the sunroof is in normal open mode, the close button is the front one. If the sunroof is in rear tilt negative pressure mode, the close button is the rear one. 3. Car sunroofs can be roughly categorized into: external sliding, internal hidden, internal hidden with external flip, panoramic, and curtain types. They are mainly installed on commercial SUVs, sedans, and other vehicle models.

15

0

Share

What is AUTO mode?

In cars, AUTO stands for automatic. This button is commonly used in car air conditioning systems, referring to the automatic air conditioning mode, which differs from the manual mode. In AUTO mode, the car's air conditioning system automatically adjusts to the appropriate temperature and fan speed. Here is more information: 1. Modern car dashboards are equipped with various indicator or warning lights beneath the panel, such as coolant level warning light, fuel level indicator, washer fluid level indicator, charging indicator, high/low beam indicator, transmission gear position indicator, Anti-lock Braking System (ABS) indicator, traction control indicator, Supplemental Restraint System (SRS) warning light, etc. 2. AUTO lights can remain on continuously. AUTO lights, also known as automatic sensing headlights, are equipped with light-sensing control systems for driver convenience. These systems contain light sensors that detect external light intensity. When the sensors detect that the ambient light is above or below a certain threshold, they send an electronic signal to the ECU, which then controls the headlights to turn on or off. The advantage of AUTO lights is that once enabled, they automatically activate when driving at dusk or entering tunnels if the system senses the surrounding environment has darkened.

3

2

Share

What is the difference between dry transmission oil and wet transmission oil?

What Are the Vehicle Annual Inspection Exhaust Emission Standards?

How often should the antifreeze in a new car be replaced?

Do You Need to Lift Off the Throttle When Using Paddle Shifters?

Can You Wash the Inside of a Car Hood with Water?

Where is the car sunroof switch located?

What is AUTO mode?

What does 'mode' mean on a car air conditioner?

What Causes Gear Shift Jerkiness in Automatic Transmission Vehicles?

Difference Between Body-on-Frame and Unibody?

Should You Leave the Car in P or N Gear When Parking for a Long Time Without Turning Off the Engine?