What Are the Grades of Engine Oil and Diesel Oil?

How to Operate the Windshield Wipers in Driving Test Subject Three?

There are several key points to note when operating the windshield wipers during Driving Test Subject Three. Here is a detailed explanation: 1. Gear Setting: It is recommended to use the second gear of the wipers for continuous back-and-forth wiping. 2. Method: Start using the wipers when it begins to drizzle, preferably after spraying windshield washer fluid (washer fluid can be used not only when parked but also while driving). This ensures sufficient moisture on the windshield to lubricate the wipers. 3. Precautions: While driving, it's not just the rain from the sky you need to guard against, but also the muddy water splashed up by the vehicle ahead. In such situations, intermittent mode can easily leave muddy streaks on the windshield, severely impairing visibility. If the rain stops while driving, do not rush to turn off the wipers.

5

4

Share

Will Water Enter the Car If It Reaches Halfway Up the Wheels?

Both the engine and the cabin may be at risk of water ingress. In such cases, never start the car, as it could cause damage to electronic devices and components. Here are the key points: 1. Water Submerging the Exhaust Pipe: If water submerges the exhaust pipe but does not exceed half the wheel height, move the car away promptly. Starting the car at this stage will not cause water to be sucked back into the engine. While driving, reduce speed to prevent water from entering the engine's intake system. 2. Water Reaching Halfway Up the Wheels: If water reaches halfway up the wheels, a well-sealed car generally won't let water in. However, prolonged exposure or poor sealing may lead to water seepage. Ensure the engine's intake system is not compromised, then drive the car to a 4S dealership to have the soaked interior components removed, cleaned, and dried.

2

5

Share

Does a small tear in the tire require replacement?

Tire with a small tear needs to be evaluated based on the location of the tear to determine whether replacement is necessary. Here are the details: Location of the tear on the tread: If it's on the tread and there is no air leakage, you can continue driving normally without replacement. If there is air leakage, it should be repaired before use; Location of the tear on the sidewall: If there is a small tear on the sidewall, check if the cords are damaged. If the cords are not damaged, you can drive short distances in the city. If the cords are damaged, the tire should be replaced immediately; Tire tear during driving: If you feel the tire is damaged while driving, pull over immediately to inspect the tire. If the tire pressure drops sharply, you should not continue driving and must replace it with the spare tire to drive to the nearest repair shop for handling.

16

0

Share

Is the Front Wheel Thumping Noise Caused by Too Hard Suspension?

The front wheel thumping noise could potentially be caused by excessively hard suspension. Below are the related reasons for the front wheel thumping noise: 1. Loose steering ball joint: When the ball joint is excessively worn, it will create play, resulting in a thumping noise when the vehicle travels on uneven roads. This issue can only be resolved by replacing the lower control arm ball joint. 2. Shock absorber oil leakage or deformation: When the shock absorber is impacted or ages, its damping effect will significantly decrease. Without proper lubrication inside the shock absorber, abnormal noises will occur. If the shock absorber is severely aged, replacement is the only solution. 3. Wheel hub out-of-roundness: If the wheel hub suffers a significant impact, it may become out-of-round. When this happens, a rhythmic thumping noise will occur, accompanied by regular bumps. This can be resolved through wheel hub repair or replacement.

7

0

Share

Is an automatic transmission fuel consumption of 8 liters considered high?

An automatic transmission fuel consumption of 8 liters is considered low for a 2.0L engine; for a 1.5L or 1.6L engine, it is normal but not particularly fuel-efficient. Below is an introduction to fuel consumption: 1. Fuel consumption and engine displacement: Although fuel consumption is related to engine displacement, this relationship is not absolute. A larger cylinder volume (displacement) can hold more combustible mixture (air-fuel), so under otherwise identical conditions, an engine with a larger cylinder volume (displacement) will inevitably have higher fuel consumption. 2. Methods to save fuel: (1) Maintain good driving habits: Different driving habits can affect a car's fuel consumption. During driving, frequent rapid acceleration or deceleration can increase fuel consumption by 5%-10% compared to normal conditions. (2) Shift gears frequently: Switch to different gears according to different road conditions. For example, when going uphill, if you do not switch to L gear or low gear, the car's fuel consumption will increase.

1

4

Share

Excessive Toe-in Causes Inner or Outer Tire Wear?

Excessive toe-in causes inner tire wear. In this case, a four-wheel alignment is required to restore the vehicle's toe-in to normal. Otherwise, prolonged tire scrubbing will lead to excessive tire wear. In severe cases, it may cause tire blowouts, reduce driving stability, and result in accidents. Here are the details: Tire scrubbing refers to abnormal accelerated wear on the inner or outer side of one or more tires, where a specific part of a tire wears out much faster than the others. During inspection, it's evident that the tread wears faster compared to other tires or the opposite side of the same tire, quickly causing uneven wear and rendering the tire unusable. Possible causes of inner tire wear include: improper tire pressure (too high or too low) leading to uneven wear; incorrect wheel dynamic balance parameters; inaccurate four-wheel alignment settings; and issues with the front suspension system, such as misalignment or loose ball joints.

20

4

Share

What Are the Grades of Engine Oil and Diesel Oil?

How to Operate the Windshield Wipers in Driving Test Subject Three?

Will Water Enter the Car If It Reaches Halfway Up the Wheels?

Does a small tear in the tire require replacement?

Is the Front Wheel Thumping Noise Caused by Too Hard Suspension?

Is an automatic transmission fuel consumption of 8 liters considered high?

Excessive Toe-in Causes Inner or Outer Tire Wear?

What is the Tire Speed Rating?

What is the normal temperature range for tires?

Will Water Definitely Enter the Engine If Restarted After Stalling in Water?

What is the fuel consumption of the 2021 Geely Binyue?