What to do if the Golf has a jerking sensation after wading through water?

What does maxAC mean in BMW 3 Series?

In BMW 3 Series, maxAC refers to activating the maximum cooling mode of the air conditioning system. A/C is the abbreviation for air condition, which can be understood as air control or air regulation. In automobiles, its function can be interpreted as the air conditioning cooling switch. When the A/C light is on, it indicates that the air conditioning compressor is activated, increasing engine load and fuel consumption. When this button is pressed, the air conditioning compressor starts working, and the air blown by the blower becomes cold. Pressing the AC button causes the electromagnetic clutch of the air conditioning compressor to engage, making the compressor rotate with the engine and enter the cooling state. When the A/C button is activated, the vehicle's cooling equipment operates, generating moisture during its operation. Combined with the hot and stuffy environment of the engine compartment, this creates an ideal condition for the growth of mold and bacteria. Over time, the air conditioning system may develop unpleasant odors, such as sour smells. Therefore, it is recommended to turn off the A/C shortly before reaching your destination and increase the fan speed slightly to allow the air to dry out the ducts, making it harder for mold to grow.

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There are generally three types of engine oil. What are they?

Engine oil is divided into the following three categories: conventional mineral oil, semi-synthetic oil, and full synthetic oil. Below are the relevant introductions: 1. Mineral oil: Mineral oil is a commonly used lubricant in the market. It is derived from the distillation process of petroleum, where useful substances like gasoline and aviation oil are separated, and the remaining base oil is further processed and extracted. Essentially, it utilizes the inferior components of crude oil. 2. Semi-synthetic oil: Semi-synthetic oil is made using semi-synthetic base oil, which is a product of mineral oil purified through hydrocracking technology. It is a mixture of mineral oil and full synthetic oil in a 4:6 ratio. The purity of semi-synthetic oil is very close to that of full synthetic oil, but its cost is slightly higher than mineral oil, making it an ideal transitional product from mineral oil to synthetic oil. 3. Full synthetic oil: Full synthetic oil is the highest grade of engine oil. It is derived from ethylene and propylene dispersed from natural gas or gas in crude oil, which then undergoes complex chemical reactions like polymerization and catalysis to form a lubricating fluid composed of large molecules.

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Should You Wash Your Car If Seawater Splashes on It?

Seawater splashing on your car requires washing. From a chemical perspective, seawater is an electrolyte, while most components of a car's chassis and other parts are made of alloys. This often leads to redox reactions in galvanic cells, accelerating metal corrosion, which is detrimental to the car. It is recommended to wash the car and take protective measures. Below is relevant information: 1. The correct way to wash a car: Use high-quality car wash cloths. Professional car wash cloths have strong water absorption, dry quickly, are highly soft, and do not shed lint. Avoid using ordinary towels, coarse cloths, or hard plastic brushes. 2. Do not wash the car with cold water: After exposure to intense sunlight, the car's surface temperature becomes very high. Washing the car with cold water at this time is akin to giving a person who has just finished vigorous exercise a cold drink—the shock to the system is obvious. 3. Choose the right car wash solution: Always use a dedicated car wash solution when washing your car. Never use detergents or soap powder, as they will quickly erode the car's glossy surface and accelerate the aging of rubber components, tires, windows, etc.

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What is the passing score for the motorcycle theory test?

For the motorcycle license test, a score of 90 or above in the subject one (theory) is required to pass. According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" Article 29: The content of the subject one test includes: road traffic rules, traffic signals, handling of traffic safety violations and accidents, regulations on the application and use of motor vehicle driver's licenses, motor vehicle registration, and other road traffic safety laws, regulations, and rules. Article 35: The passing standards for each subject test are as follows: (1) The subject one test has a full score of 100, and a score of 90 or above is required to pass; (2) The subject two test has a full score of 100. For large buses, tractors, city buses, medium-sized buses, and large trucks, a score of 90 or above is required to pass; for other vehicle types, a score of 80 or above is required to pass; (3) The subject three road driving skills and safe and civilized driving knowledge tests each have a full score of 100, and a score of 90 or above in each is required to pass.

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What does 0w30c1c2 engine oil mean?

The "0W30" on the engine oil bottle represents the oil's grade, where 0W indicates that the minimum applicable temperature for this oil is -35°C; while 30 represents the high-temperature viscosity of the oil, with larger numbers indicating a wider applicable temperature range. c1c2 is diesel engine oil. Here is some extended information: 1. Oil grades: The winter oil grades under the SAE lubricant viscosity classification are 0W, 5W, 10W, 15W, 20W, and 25W. The symbol W stands for winter, and the smaller the number before W, the lower the low-temperature viscosity, the better the low-temperature fluidity, and the lower the minimum applicable temperature. The summer oil grades under the SAE lubricant viscosity classification are: 20, 30, 40, and 50. The larger the number, the higher the viscosity and the higher the maximum applicable temperature. 2. Viscosity: During the break-in period, oils with lower viscosity are generally chosen, and they are required to have excellent anti-wear properties. Oils with lower viscosity have better fluidity and cleaning ability, which can more effectively help dissipate heat and remove fine debris generated during the break-in period. Oils with higher viscosity provide more protection to engine components, suitable for engines operating at high temperatures for extended periods, filling the gaps in the engine that have widened due to prolonged operation. On the other hand, oils with lower viscosity may be more fuel-efficient, allowing the engine to reach higher speeds more quickly and providing more responsive acceleration.

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What are the restrictions on yellow-label vehicles?

Green environmental roads have full-day or daytime traffic restrictions. Please refer to the notices from local environmental protection departments for specific details. The following is an introduction to yellow-label vehicles: 1. Yellow-label vehicles are a general term for high-pollution emission vehicles: These are gasoline vehicles that do not even meet the National I emission standards or diesel vehicles that do not meet the National III emission standards. They are called yellow-label vehicles because they are issued yellow environmental labels. 2. Characteristics of yellow-label vehicles: Yellow-label vehicles have high emission volumes, high concentrations, and poor emission stability. Due to outdated exhaust emission control technology, the exhaust emissions of these vehicles do not meet the Euro I standards, with emissions equivalent to 5 to 10 times that of new vehicles. The identification of yellow-label vehicles is based on exhaust emission standards. China implemented the 'Light-Duty Vehicle Pollutant Emission Limits and Measurement Methods (I)' in 2001, which is equivalent to the Euro I standard. The 'Light-Duty Vehicle Pollutant Emission Limits and Measurement Methods (III)' implemented in 2007 is equivalent to the Euro III standard. Therefore, the National I emission standard stipulates that carbon monoxide must not exceed 3.16 grams per kilometer, hydrocarbons must not exceed 1.13 grams per kilometer, with the particulate matter standard for diesel vehicles not exceeding 0.18 grams per kilometer, and a durability requirement of 50,000 kilometers. The National III emission standard stipulates that hydrocarbons must not exceed 0.66%, carbon monoxide must not exceed 2.1%, particulate matter must not exceed 0.1%, and nitrogen oxides must not exceed 5%.

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What to do if the Golf has a jerking sensation after wading through water?

What does maxAC mean in BMW 3 Series?

There are generally three types of engine oil. What are they?

Should You Wash Your Car If Seawater Splashes on It?

What is the passing score for the motorcycle theory test?

What does 0w30c1c2 engine oil mean?

What are the restrictions on yellow-label vehicles?

What does it mean to transfer ownership of a new car?

What are the compensation terms for motor vehicle water damage insurance?

How many liters of engine oil should be added to an Audi Q2?

What is the Mercedes-Benz equivalent to the BMW 6 Series