What Are the Causes of Poor Braking?

What grade of gasoline does the Audi Q7 use?

Audi Q7 is recommended to use 95 octane gasoline, formerly known as 97 octane. Here is some additional information about gasoline: 1. The two most commonly used gasoline grades for household cars are 95 and 92 octane. There is no difference in fuel quality between these two grades - a higher octane number doesn't necessarily mean better quality. 2. 92 octane gasoline consists of 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. The main difference between 92 and 95 octane gasoline lies in their octane ratings - the higher the octane number, the better the fuel's anti-knock performance.

11

1

Share

What are the maintenance items for 30,000 kilometers?

Generally speaking, the 30,000-kilometer maintenance items for a car include changing the engine oil, oil filter, air filter, fuel filter, throttle cleaning, and replacing spark plugs. Some 4S shops may recommend additional maintenance items, which can be considered based on personal preference and actual conditions. Among these, changing the engine oil and oil filter are mandatory. The specific maintenance items are as follows: 1. Engine oil and four filters: The four filters in the engine oil and four filters include the oil filter, air filter, fuel filter, and cabin air filter. The oil filter needs to be replaced with every maintenance, the air filter is recommended to be replaced every 10,000–15,000 kilometers, the fuel filter is recommended to be replaced every 30,000 kilometers, and the cabin air filter is recommended to be replaced every six months. 2. Throttle cleaning: Throttle cleaning is not necessary before 30,000 kilometers. 3. Spark plugs: At 30,000 kilometers, although the spark plugs have not completely lost their ignition performance, their ignition performance has significantly decreased. A decline in ignition performance directly affects the vehicle's idle shaking, misfiring, and weak acceleration. 4. Air conditioning cleaning: Air conditioning cleaning can remove dust and dirt from the air conditioning ducts and provide a sterilizing effect.

2

5

Share

How to Drive on Snow and Ice Roads

To drive safely on snow and ice roads, follow these guidelines: Straight-line driving: Maintain sufficient following distance, generally at least twice the normal road distance. Keep a steady speed and avoid sudden acceleration or deceleration. Avoid overtaking unless absolutely confident. Turning: Reduce to minimum speed before entering turns. Steer slowly and smoothly, taking wide turns rather than sharp ones. Hill driving: Before ascending, slightly increase speed to gain momentum. Maintain constant speed during ascent without acceleration. Before descending, reduce to minimum speed and descend at steady pace without braking. Never coast in neutral gear.

13

1

Share

How Often Should the Original Brake Fluid Be Replaced?

Brake fluid should be replaced every 40,000 kilometers or 3 years. Here are some precautions for brake fluid usage: Do not mix different types: Do not mix different types or brands of brake fluid. Due to differences in formulations, mixing brake fluids can lead to a decline in performance. Replace if water content is high: If the brake fluid absorbs moisture or contains impurities, it should be replaced or filtered promptly. Otherwise, it may result in insufficient braking pressure and affect braking performance. Replace after prolonged use: For vehicles driven normally for 40,000 kilometers or with brake fluid used continuously for over 3 years, the brake fluid is prone to deterioration due to prolonged use and should be replaced in a timely manner.

12

4

Share

Does 'S' Stand for Provincial Highway?

s stands for provincial highway. Relevant introductions are as follows: Rules for road numbering: In China, roads are mainly divided into three levels according to their administrative grades: national highways (including national trunk highways), provincial highways, and county highways. The first letters of the Chinese pinyin for the words 'national', 'provincial', and 'county'—G, S, and X—are used as their respective identifiers, with the identifiers followed by numbers to form the numbering. Numbering of provincial highways: The numbering of provincial highways is compiled within the scope of provincial administrative regions; the numbering of provincial radial highways is also compiled within the scope of provincial administrative regions. Radial lines (starting with 1), vertical lines (starting with 2), horizontal lines (starting with 3), vertical connecting lines (starting with 4), horizontal connecting lines (starting with 5), and ring lines (starting with 6).

10

0

Share

What Are the Common Faults When an Angle Grinder Fails to Rotate?

Common faults that may cause an angle grinder to stop rotating include: power disconnection; loose or detached connectors; poor switch contact; lack of contact between the brushes and commutator surface; burnt switch contacts; mechanical jamming. Below is relevant information about angle grinders: Usage Tips: Before use, always check whether the angle grinder has a protective cover, whether the cover is secure, and whether the grinding disc is properly installed. Precautions: It is strictly prohibited to use damaged grinding discs. During cutting, prevent sparks from scattering to avoid harming others and keep away from flammable and explosive materials. Always wear protective goggles and appropriate work clothing. Avoid loose-fitting clothing, do not wear jewelry, and tie back long hair. Never operate the grinder while wearing gloves or with unbuttoned cuffs.

2

3

Share

What Are the Causes of Poor Braking?

What grade of gasoline does the Audi Q7 use?

What are the maintenance items for 30,000 kilometers?

How to Drive on Snow and Ice Roads

How Often Should the Original Brake Fluid Be Replaced?

Does 'S' Stand for Provincial Highway?

What Are the Common Faults When an Angle Grinder Fails to Rotate?

What is the ground clearance of the Soueast A5 Yiwu?

What Causes Abnormal Noise When Braking a Car?

What brand is the JCUV?

Where is the oil filter located on the Peugeot 408?