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How to Check the Quality of Engine Oil?

1 Answers

OAdeline

07/28/25 8:13am

Methods to check the quality of engine oil: 1. Inspect the packaging: Genuine engine oil packaging will not have blurred logos or unclear patterns, and the material of the oil cap is fine. If the appearance of the oil is blurry and the material is rough, it is likely counterfeit oil; 2. Check the seal: If the seal of the oil is not tight, it is probably fake, indicating it has been opened; 3. Observe the color: Genuine oil has a bright, clear color and flows smoothly without impurities or suspended particles. Fake oil appears dull and may have turbidity; 4. Smell the oil: Genuine oil is odorless. If there is a pungent or unusual smell, the oil is likely not genuine and may contain impurities; 4. Check the anti-counterfeit label: Genuine oil has an anti-counterfeit label with a barcode that can be scanned to verify production date, manufacturer, and other details to confirm authenticity.

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When Will the Automotive Chip Shortage Be Resolved?

The shortage of automotive chips is expected to reach a balance in 2022. Here are the details: Introduction to Automotive Chips: Automotive-grade chips, components for vehicles. Automotive-grade refers to the specification standards applicable to automotive electronic components. Domestic Situation: China has become the world's largest automotive market, with trends in electrification and intelligence driving a significant increase in the demand for automotive chips. Domestic production of automotive-grade chips has already established a scale foundation. However, current domestic automotive-grade chips still face challenges such as small-scale application in vehicles, long certification cycles, low technological added value, and high dependency on upstream industries.

What is the maximum speed allowed when visibility is below 200 meters on the highway?

The maximum speed must not exceed 60 kilometers per hour. Below is the relevant information: Regulations for low visibility on highways: When visibility is below 200 meters, the speed must not exceed 60 kilometers per hour. When visibility is below 100 meters, the speed must not exceed 40 kilometers per hour. When visibility is below 50 meters, the driving speed must not exceed 20 kilometers per hour, and the driver should exit the highway at the nearest exit as soon as possible. Precautions for highway driving: Drive within the lane. Always wear a seatbelt. The driver should focus on driving. Adhere to the speed limits on highways. Do not change lanes arbitrarily. Avoid making sudden and sharp turns of the steering wheel. Never reverse or drive in the wrong direction on highways. Maintain a safe distance from vehicles in front and behind.

Will the steering become lighter when the toe-in is adjusted to the optimal direction?

Adjusting the toe-in can make the steering wheel lighter or heavier. Here is the relevant introduction: Introduction to toe-in: The so-called toe-in refers to the angle between the theoretical rotation planes of the two steering wheels when the car is stationary in the direction of forward movement, known as the toe-in angle. For the convenience of measurement and adjustment, this angle can also be converted into the difference between the distance between the rear two points of the above two planes and the distance between the front two points, commonly referred to as toe-in. Function of toe-in: Whether the toe-in of a car is properly adjusted plays a decisive role in the wear of the front tires and also has a significant impact on the car's handling performance.

What to Do If the Start-Stop System Fails?

If the start-stop system fails, it is recommended to go to a 4S shop for repair. The following are the specific reasons for the failure of the automatic start-stop system: 1. The system may be turned off due to mistakenly pressing the automatic start-stop button on the car. Check whether the system is turned off. For manual transmission cars, the automatic start-stop system will only start when the system recognizes that the gear is in neutral, the handbrake is pulled, and the clutch is released when parking. 2. The start-stop system may fail to work due to the engine not reaching normal operating temperature, the automatic air conditioner not reaching the preset temperature, insufficient battery storage, turning the steering wheel after parking, emergency braking of the vehicle, or reversing.

What Causes the Trunk to Open Automatically?

The trunk door lock is generally controlled by an electronic control unit (ECU). Through button activation, the ECU controls the unlocking mechanism. Below are specific reasons why a trunk may open automatically: 1. Issues with the lock mechanism, or the latch being too dry and lacking lubrication. 2. Check if the linkage inside the handle is stuck; it's best to have it inspected at a service center. 3. Damage to the trunk switch or a malfunction in the system's control unit can cause the trunk to open automatically. Another possibility is that the vehicle detects the key in the trunk or certain rear seat positions, mistakenly assuming the owner left the key in the trunk, triggering a safety release action.

Does Water Reaching Half of the Tire Count as Water Damage?

Water reaching half of the tire without submerging the engine or transmission does not count as a water-damaged vehicle. Here are the relevant details: Introduction to Water-Damaged Vehicles; A water-damaged vehicle refers to a car that has been submerged in water, typically meaning the engine or transmission has been soaked, with the water level exceeding the wheels and vehicle seats, and the vehicle's underbody components being in prolonged contact with water. Such vehicles pose significant risks, as the electrical circuits are prone to short circuits and fires. Hazards of Water-Damaged Vehicles: Water-damaged vehicles can be repaired to some extent, but even after repairs, serious hidden dangers remain. The longer the immersion time, the higher the likelihood of malfunctions. It's like a watch falling into water—even if it's disassembled and dried, the watch will still malfunction and cannot be completely repaired.

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