Why Engine Oil Needs to Be Changed?

What is the function of an engine radiator?

The function of an engine radiator is to protect the car from damage and keep the engine within an appropriate temperature range. The radiator is the main component of the cooling system, and its principle is to use cold air to lower the temperature of the coolant from the engine inside the radiator, with the aim of protecting the engine from damage caused by overheating. The radiator is part of the automobile cooling system. In the engine water-cooling system, the radiator consists of an inlet chamber, an outlet chamber, a main plate, and a radiator core. It uses water as a heat carrier to conduct heat and dissipates it through large-area cooling fins via convection to maintain the engine's proper operating temperature. Daily maintenance and precautions for the radiator: The radiator and the water tank together serve as the car's cooling devices. In terms of their material, they are metal and not corrosion-resistant, so contact with corrosive solutions such as acids and alkalis should be avoided to prevent damage. For car radiators, clogging is a common issue. To reduce the occurrence of clogging, soft water should be used for filling. Hard water should be softened before filling to prevent scale buildup that could clog the car radiator. In winter, cold weather can cause the radiator to freeze, expand, and get damaged, so antifreeze should be added to prevent water from freezing. When adding water to the car radiator, the water tank cap should be opened slowly, and the operator should keep their body as far away as possible from the filling port to avoid being scalded by high-pressure, high-temperature steam or water spray from the outlet.

2

5

Share

How Many Honks Mean Thank You?

To express gratitude while driving, you can give a single honk. Two short honks -- "beep beep": Generally used when overtaking, where passenger cars or faster vehicles usually have the right of way. When intending to overtake, besides using your lights to signal the vehicle ahead, it's best to add two short honks -- "beep beep". However, this method should be used appropriately to avoid irritating the driver in front. Three honks: "Beep beep beep" serves as a warning. During normal driving, when you need to alert pedestrians or non-motorized vehicles ahead to yield the right of way, you can use three short and rhythmic honks "beep beep beep" as a reminder to prevent traffic accidents.

14

5

Share

Does Underbody Impact Affect New Energy Vehicles Significantly?

When a vehicle experiences underbody impact, a collision force is generated between the vehicle's chassis and the object it hits. Therefore, underbody impact will more or less cause certain damage to the impacted area of the vehicle's chassis. New Energy Vehicles: New energy vehicles are powered by electricity and carry large power batteries. Structurally, the interior of a power battery can be divided into positive electrode material, negative electrode material, electrolyte, and battery separator. Among these materials, except for the positive electrode material, the other three materials are combustible, and the electrolyte has a very low ignition point. The battery separator primarily functions to isolate the positive and negative electrodes of the battery, preventing short circuits. Precautions: Underbody impact commonly occurs when driving over potholes or speed bumps at high speeds, mounting curbs, or driving on rough roads. Therefore, when driving over potholes, speed bumps, or on roads with poor conditions, it is essential to reduce speed to avoid underbody impact, which could damage the battery or even cause a fire. If underbody impact has occurred, immediately contact a service center for assistance.

2

Share

Why won't a manual transmission car move after starting and engaging the gear?

Manual transmission cars may not move after starting and engaging the gear due to issues such as problems with the brake caliper, rust bonding the brake pads and brake discs together, not wearing the seatbelt, or not releasing the handbrake. The specific reasons are as follows: Brake caliper issue: The piston ring of the brake caliper may be stuck, requiring replacement of the brake caliper. Alternatively, the metal plate fixing the brake pads in the brake caliper may be deformed, necessitating replacement of the brake pad's metal plate. Brake pads and brake discs rusted together: If the car owner lives in a relatively humid area, especially after rainy or overcast days with high humidity, the brake pads and brake discs may rust and stick together after parking for a while. This situation frequently occurs in winter after washing the car. The brake discs freezing is a normal phenomenon. Not wearing the seatbelt: Some car models will automatically shift back to P gear or activate the automatic parking function if the seatbelt is not fastened or the driver's door is not properly closed. In such cases, the car cannot be driven.

12

3

Share

What lights should be used when following a car at close range at night?

When following a car at close range at night, you should turn on the low beam. Regulations for using lights when driving at night: When meeting a vehicle from the opposite direction on a road without central isolation facilities or a center line, you cannot use the high beam within 150 meters of the oncoming vehicle; when meeting a non-motorized vehicle on a narrow bridge or narrow road without central isolation facilities or a center line, you cannot use the high beam; when driving at night in conditions with no streetlights, poor lighting, or low visibility due to fog, rain, snow, or dust, you cannot use the high beam when following a car closely in the same direction; when passing sharp curves, slopes, arched bridges, crosswalks, or intersections without traffic signals, you should alternately use the high and low beams as a signal. Violators will be fined and penalized with demerit points. The following situations require the use of low beams: Driving in areas without streetlights after dark or during dusk when it is relatively dark or at dawn when light is just appearing requires the use of low beams; in heavy fog, snow, or rain when visibility is obstructed, low beams must be used even during the day; on some roads where lighting is available but insufficient, low beams should also be used.

15

2

Share

Is It Normal for New Cars to Have Different Tire Brands on the Front and Rear?

Under normal circumstances, all four tires of a new car should be of the same brand unless there was an assembly error at the factory or the tires were replaced later. In such cases, it is recommended to contact the 4S store or manufacturer to confirm the specific reason. Potential impacts of having different tire brands: Different tread patterns can result in varying contact areas with the ground, leading to uneven wear and potential alignment issues over time. Tires from different manufacturers may have significant structural differences, and mixing them can increase the risk of accidents. Different tread patterns and brands can also severely affect braking performance, wear patterns, and high-speed performance. Necessity of rotating front and rear tires: Rotating the front and rear tires helps prevent uneven wear, also known as tire cupping. Causes of uneven wear include suspension design, parameters during wheel alignment, and driving style. Regular tire rotation can extend tire lifespan, and it is recommended to rotate them every 20,000 kilometers. Car tires are one of the most critical components of a vehicle.

4

3

Share

Why Engine Oil Needs to Be Changed?

What is the function of an engine radiator?

How Many Honks Mean Thank You?

Does Underbody Impact Affect New Energy Vehicles Significantly?

Why won't a manual transmission car move after starting and engaging the gear?

What lights should be used when following a car at close range at night?

Is It Normal for New Cars to Have Different Tire Brands on the Front and Rear?

How to Install a Spoiler Without Violating the Law?

How Much Do Four Wheel Hubs Weigh?

What is the approximate maximum body width?

What is the reason for severe jerking after using a circulation machine for oil change?