What is the shelf life of gear oil?

What is the maximum wading depth of the Beijing BJ40?

According to official information, the maximum wading depth of the Beijing BJ40 is 80 cm. Common tire specifications include 265/65R17, 245/70R17, and 285/70R17. The vehicle height is 1871 mm, and it is a four-door, five-seat SUV. The maximum wading depth refers to the deepest water level a car can safely pass through. Generally, the maximum wading depth for sedans does not exceed 30 cm, while SUVs can handle slightly deeper water, though it is still advisable not to exceed 50 cm. Among common models, the GAC Trumpchi GS8 has a maximum wading depth of 30 cm, the Audi A4 has 32 cm, the Volkswagen Sagitar has 30 cm, the Land Rover Range Rover has 90 cm, the Jeep Compass has 48 cm, and the Highlander has 45 cm. SUVs clearly exceed many sedans in wading depth. Generally, depending on the depth of water and the vehicle's specifications, drivers should take different measures as follows: If the wading depth reaches the height of the exhaust pipe, it is still safe. Even if water enters the exhaust pipe, the pressure inside is sufficient to expel the water. As long as the engine is not turned off in the water, water will not flow back into the vehicle. If the wading depth reaches the height of the door frame, it becomes more dangerous. The vehicle's circuits, electronic components, and sensors are mostly located at the bottom, which could lead to short circuits, damaging critical electrical components and preventing the car from starting properly. If the wading depth reaches the height of the air intake pipe, it is extremely dangerous. Driving directly into such conditions may cause the engine to stall immediately, resulting in permanent damage or rendering the engine unusable.

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What to Do If Water-Contaminated Gasoline Is Added?

After adding water-contaminated gasoline, you can first let it settle to separate the oil and water, then remove the water. However, this method is difficult to completely eliminate the water in the fuel tank and can only remove most of the moisture. It is necessary to remove the car's spark plugs and expose them to the sun for a period of time until it is confirmed that there is no moisture left in the spark plugs. Water-contaminated fuel needs to be treated; otherwise, it can cause frequent stalling and damage the engine. The fuel in the tank is injected into the engine through the fuel injector. The engine continues to work when it receives fuel but stops when it receives water, leading to stalling. If a car encounters heavy rain or water ingress, certain special circumstances may cause water to enter the fuel tank. Improper handling can easily damage the engine, cause frequent stalling, and leave lasting issues. If there is only a small amount of water in the gasoline and the tank is not full, you can continue to add uncontaminated gasoline to reduce the water content. You can also add fuel additives such as fuel tank water removers or fuel system cleaners to help the engine burn more efficiently. If a significant amount of water has entered, you can drain all the fuel from the tank and refill it with uncontaminated fuel. If the car experiences engine shaking or poor acceleration, it is necessary to go to a 4S shop to clean the filter, fuel lines, and injectors. Otherwise, severe cases may result in the car failing to start. Gasoline has strong hydrophilic properties and can absorb moisture from the air, so low water content is not a problem.

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Is It Normal for Brake Discs to Rust?

Brake disc rusting is a normal phenomenon. Solutions include: 1. Minor rust: It can be polished off through normal braking. Friction between the brake pads and the brake disc will occur, and after several brakes, the rust can be removed, restoring normal use; 2. Severe rust: The brake pads can be removed and polished, but this will shorten the service life of the brake disc. It is best to replace the brake disc with a new one. Rust on the brake disc will make the surface uneven, causing directional shaking and abnormal noises during braking. The brake disc is an important component of the braking system, divided into solid brake discs and ventilated discs.

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What to Do If the Driver's License Has Passed the Annual Review Deadline?

If your driver's license has exceeded the annual review deadline, you can apply for a replacement. 1. You can apply for a new driver's license 90 days before the expiration date of your current license: Within one year after the expiration date, you can also submit a physical condition certificate to the local traffic police department where your household registration is located to complete the replacement application. Bring your ID card and driver's license directly to the license renewal authority. 2. A driver's license with a C-class vehicle category does not require an annual review, but it must be renewed upon expiration: If the driver has not accumulated 12 penalty points in any scoring cycle during the six-year validity period of the driver's license, they can renew it for a ten-year validity period. If, during the ten-year validity period, the driver has not accumulated 12 penalty points in any scoring cycle, they can renew it for a long-term valid driver's license.

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Can the first car maintenance be postponed?

Car first maintenance can be postponed, but the quality of the engine oil should be considered. If the engine oil used is of poor quality, it is recommended to perform maintenance as soon as possible. The first maintenance for a new car is free, and it should be done according to the maintenance cycle specified in the vehicle maintenance manual. The first maintenance period for a family car is 5,000 kilometers or three months, whichever comes first. Once the mileage or time is reached, you should go to the 4S store for maintenance. Although the first maintenance time of the car can be delayed, if the car exceeds the maintenance cycle, it will cause certain damage to the internal parts of the car. Therefore, the first maintenance time of the car should not be delayed for too long.

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Why Should the First Maintenance Be Done at a 4S Shop?

The first maintenance should be done at a 4S shop because the shop needs to systematically document the owner's vehicle, inputting the chassis number and vehicle information into the nationwide warranty system—essentially registering the vehicle—to qualify for warranty coverage. For the first maintenance, schedule an appointment by phone in advance, then bring the maintenance manual, driving license, and other required documents to the 4S shop. The first maintenance includes: 1. Changing the engine oil and oil filter, cleaning the air filter, checking the generator belt and wiper blades for damage, inspecting the levels of various fluids, verifying tire pressure, and checking for uneven wear, bulges, or damage; 2. Inspecting the vehicle's chassis, including the brake pads, brake discs, connecting rods, ball joints, and CV joints for any scratches; 3. Testing all switches and lights to ensure they function properly.

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What is the shelf life of gear oil?

What is the maximum wading depth of the Beijing BJ40?

What to Do If Water-Contaminated Gasoline Is Added?

Is It Normal for Brake Discs to Rust?

What to Do If the Driver's License Has Passed the Annual Review Deadline?

Can the first car maintenance be postponed?

Why Should the First Maintenance Be Done at a 4S Shop?

What are the impacts of under-invoicing by 4S stores?

Can You Buy a Showroom Car from a 4S Store?

How to correctly turn on the air conditioning in the Tiguan?

What to Do When the Driving License Points Have Not Been Reset by the Due Date?