What is the mantra for downshifting and revving in large trucks?

Is 20W-50 Engine Oil Suitable for Winter or Summer?

20W-50 engine oil is suitable for both summer and winter in southern regions, but not for northern winters. This is because 20W-50 viscosity oil can only be used at a minimum temperature of -15°C, while northern winter temperatures often drop below -15°C. At such low temperatures, the fluidity of this oil deteriorates, which can lead to engine failure to start and other issues. 20W-50 is the SAE standard viscosity value for engine oil, indicating the oil's viscosity. The "W" stands for winter, and the preceding number represents low-temperature fluidity. Common values include 0W, 5W, 10W, 15W, and 20W, where 0W corresponds to -35°C; 5W to -30°C; 10W to -25°C; 15W to -20°C; and 20W to -15°C. The smaller this number, the better the low-temperature fluidity, resulting in smoother cold starts for the car. The number following the "W" indicates the oil's kinematic viscosity at 100°C. A higher value means the oil can maintain its viscosity index better at high temperatures, which can also be understood as providing better lubrication performance under high-temperature conditions. Apart from the numbers before and after the "W," other parameters can also categorize the oil. For example, oils starting with "S" are for gasoline engines, while those starting with "C" are for diesel engines. If both "S" and "C" are present, the oil is suitable for both gasoline and diesel engines. When selecting engine oil, keep the following points in mind: Choose oil based on the engine's requirements. There is no need to use overly advanced oil in engines with lower requirements, nor should you use lower-grade oil in engines with higher requirements. Opt for multi-grade oil whenever possible. Multi-grade oil is economical, long-lasting, and efficient, offering better protection for the engine. Due to its characteristics, multi-grade oil may appear darker prematurely and have lower oil pressure compared to conventional oil, both of which are normal. Be wary of counterfeit oil, as well as oils contaminated with debris or grease, which can clog the engine's intake system and accelerate engine damage. Always purchase from reputable sources to avoid buying fake oil.

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What does it mean when the EPB light is on?

EPB light on refers to the electronic parking brake system indicator light. When the EPB light is on in a car, it indicates a malfunction in the electronic handbrake. Since the electronic handbrake consists of multiple components such as wheel speed sensors, throttle position sensors, handbrake switches, wheel speed sensors, and motors, any abnormality in these components may cause the EPB light to illuminate. It is recommended that the owner take the car to a repair shop for inspection. A fault diagnostic tool can quickly and accurately identify the source of the problem. If the EPB light is on, you can try pressing the foot brake while also pressing the handbrake down for about 20 seconds, then lifting the handbrake back up. If this does not resolve the issue, the car should be taken to a repair shop for further inspection.

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What does EBD mean in a car?

EBD in a car refers to Electronic Brakeforce Distribution. EBD is actually an auxiliary function of ABS, which adds a control software to the ABS control computer, while the mechanical system remains completely consistent with ABS. It serves as an effective supplement to the ABS system and is generally used in combination with ABS to enhance its effectiveness. During emergency braking, before ABS activates, EBD automatically compares the slip rate of the rear wheels to that of the front wheels based on the vehicle's weight and road conditions. If it detects that this difference needs adjustment, the brake hydraulic system will adjust the pressure transmitted to the rear wheels to achieve a more balanced and closer-to-ideal distribution of braking force. Vehicles equipped with the EBD system can automatically detect the adhesion conditions between each wheel and the road surface, appropriately distributing the force generated by the braking system to all four wheels. With the assistance of the EBD system, braking force can achieve optimal efficiency, significantly reducing braking distance while maintaining vehicle stability during braking, thereby improving driving safety.

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What does the (!) symbol on the car dashboard mean?

Car dashboard (!) represents the brake system warning light. The brake system warning light indicates: 1. Some vehicles illuminate this light for a few seconds when the ignition is turned on, then it turns off after starting the engine; 2. Low brake fluid level or deteriorated brake fluid, which may illuminate during driving; 3. Malfunction in the brake system; 4. ABS failure may also trigger this light; 5. Severely worn or failed brake pads can cause this warning light to illuminate. This warning light is easily confused with the parking brake indicator. The parking brake light appears when the handbrake is engaged while driving, symbolized by a 'P' in the middle, whereas the brake system warning light features an exclamation mark and indicates issues with the braking system. When the brake system warning light appears, it's necessary to check for brake pad wear, brake failure, deteriorated or low brake fluid level, ABS failure, and other related issues.

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Is It Normal for Brake Discs to Rust?

It is normal for brake discs to rust as they are made of cast iron. When the vehicle remains stationary for extended periods or in high humidity conditions, rust may appear. Driving the car and applying the brakes several times can wear off the rust on the brake discs. Solution for slight rust: Minor rust on brake discs can be removed through normal braking. The principle involves the friction between the brake pads and the brake discs to achieve a rust removal effect. After applying the brakes several times, the brake discs will shine like new. Solution for severe rust: When brake discs are severely rusted, normal braking may not effectively remove the rust. Severe rust on brake discs can cause uneven surfaces, leading to issues such as steering wheel vibration and abnormal brake noises when braking. In such cases, it is best to take the car to a 4S shop, remove the brake discs, sand off the rust with sandpaper, ensure the brake pads are in good condition, reinstall them properly, and conduct a road test. If there is no significant vibration, the vehicle can be used normally.

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What does ACC mean in cars?

ACC in cars stands for Adaptive Cruise Control. The Adaptive Cruise Control system is an intelligent automatic control system that has evolved from the existing cruise control technology. The adaptive cruise system uses low-power radar or infrared beams to determine the exact position of the vehicle ahead. If it detects that the vehicle ahead is slowing down or a new target is detected, the system sends a signal to the engine or braking system to reduce the vehicle's speed, maintaining a safe distance from the vehicle ahead. When controlling the vehicle's braking, the Adaptive Cruise Control system typically limits the deceleration to a level that does not affect comfort. If greater deceleration is needed, the ACC control unit will issue audible and visual signals to prompt the driver to take active braking measures. When the distance to the vehicle ahead increases to a safe distance, the ACC control unit will adjust the vehicle's speed to the preset cruising speed.

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What is the mantra for downshifting and revving in large trucks?

Is 20W-50 Engine Oil Suitable for Winter or Summer?

What does it mean when the EPB light is on?

What does EBD mean in a car?

What does the (!) symbol on the car dashboard mean?

Is It Normal for Brake Discs to Rust?

What does ACC mean in cars?

What Happens When an Engine Burns Oil?

How to Deal with the ESP Warning Light?

Which region does the license plate code 'Hei B' belong to?

What does ASR mean on a car?