What are the dimensions for the markings in Subject 2?

What kind of engine oil is best for Jetta VS5?

Jetta VS5 uses semi-synthetic engine oil for maintenance, with a viscosity of 5W-40 and a usage amount of 4.0 liters. The oil model can be selected according to the recommendation in the maintenance manual. Engine oil is divided into three types: conventional mineral oil, semi-synthetic oil, and full synthetic oil. The quality grade of the oil is indicated by the first two English letters, such as SJ or SN, and the viscosity grade is represented by the following set of numbers, like 15W-40. The viscosity grade should be selected based on the temperature during the car's usage stage. Below is more information about the three types of engine oil: 1. Mineral oil: Mineral oil is a commonly used lubricant in the market. It is derived from the distillation of petroleum to extract useful substances, such as gasoline and aviation oil, followed by further processing of the remaining base oil. 2. Semi-synthetic oil: Semi-synthetic oil is made from semi-synthetic base oil, which is a product purified from mineral oil through hydrocracking technology. It is a mixture of mineral oil and full synthetic oil in a ratio of 4:6. 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 a high-grade product among engine oils. It is derived from ethylene and propylene dispersed from natural gas or gas in crude oil, and then undergoes complex chemical reactions such as polymerization and catalysis to form a lubricating fluid composed of large molecules.

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Is it a traffic violation to make a U-turn on the sidewalk?

Making a U-turn on the sidewalk is considered a traffic violation. Once consequences occur, the harm caused is far greater than illegally crossing a solid line to make a U-turn, as the victims are pedestrians. A sidewalk refers to the part of the road separated by curbs, guardrails, or other similar facilities, specifically designated for pedestrian passage. Other situations where U-turns are prohibited are as follows: U-turns are prohibited where there is a "No U-turn" sign or a "No Left Turn" sign: If there is a sign prohibiting U-turns, then U-turns are not allowed at that intersection. The action of making a U-turn is an extension of a left turn, so if there is a sign prohibiting left turns at an intersection, U-turns are also prohibited there. U-turns are prohibited when there is no left-turn lane: Even in the leftmost lane, if there is no sign permitting left turns, U-turns are not allowed. U-turns are prohibited within the second left-turn lane line: When a vehicle is stopped in the second left-turn lane, it cannot make a U-turn. In the absence of any directional signs, vehicles can only make U-turns in the innermost left-turn lane. U-turns are prohibited on highways: Crossing the central divider to make a U-turn on a highway is illegal and will result in a fine and 12 demerit points. If you miss an exit on the highway, continue driving to the next exit to leave the highway, and do not attempt an illegal U-turn out of luck.

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Why Can't I Always Shift into Reverse Gear When Practicing Driving?

Here are the reasons why you can't always shift into reverse gear when practicing driving: 1. Not fully engaged in gear: The gear is not fully engaged and remains in neutral; reverse gear generally doesn't have a synchronizer. Although most gear shifts can be meshed through the gear's cutting angle, there are times when two gears clash and can't engage. In this case, simply lift the clutch slightly to let the input shaft rotate and realign the gears. 2. Handbrake not released: The handbrake is not released, and the car remains in manual braking mode, so it won't move. 3. Clutch not released: The clutch is not released and remains disengaged, so no power is being transmitted. 4. Transmission: The synchronizer in the transmission is stuck, or there are other issues. In this case, professional repair is needed.

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How to Solve Chain Noise Issues?

Here are the solutions for chain noise issues: 1. Mechanical components: The main causes of timing chain noise usually include lack of tension in the chain tensioner, stretched timing chain, abnormal wear of the guide chain plate, or abnormal timing sprocket. This involves replacing the faulty mechanical components—whichever part is damaged should be replaced. 2. Lubrication system failure: To prevent excessive chain wear and increased clearance, the system is equipped with an automatic chain tensioner. This tensioner operates based on oil pressure. When the lubrication system malfunctions, abnormal oil pressure can lead to excessive chain clearance and noise. Prompt inspection and repair are necessary to prevent excessive clearance and potential engine damage due to chain skipping. 3. Low oil pressure: Noise caused by low oil pressure is usually more noticeable at idle and reduces when accelerating.

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Is a Tire Produced Half a Year Ago Considered New?

Tires produced half a year ago are considered new. Below is an introduction about tires: 1. Introduction: Although tires are rubber products with a certain "shelf life," unlike food, they do not have an expiration date marked. In fact, it is difficult to determine the "shelf life" of tires because their lifespan is highly dependent on usage conditions, such as climate, parking environment, driving conditions, and the driver's habits, all of which can affect the tire's service life. 2. Tire Pressure: Besides the production date, tire pressure is also crucial for the tire's lifespan. Therefore, it is important to regularly check the tire pressure during daily use. The manufacturer's recommended tire pressure value can usually be found on the door frame. Improper tire pressure can accelerate tire wear and shorten the tire's service life.

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How to Identify the Authenticity of LLumar Car Window Film?

Here are the methods to identify the authenticity of LLumar car window film: 1. Clarity: Although car window films come in various colors, high-quality films allow clear visibility of objects beyond 6 meters at night. In contrast, inferior films produce a hazy effect. 2. Touch: High-quality films feel thick and smooth, whereas inferior ones lack sufficient toughness, being thin, brittle, and prone to wrinkling. 3. Odor: High-quality films have almost no unpleasant smell. However, inferior films contain high levels of benzene in the residual solvents of the adhesive layer, emitting a pungent odor that can be highly harmful to passengers. 4. Color: Some car films are darker in color. You can scratch the film with a fingernail or a sharp object. If the color comes off, it is likely a fake film. Genuine high-quality films are scratch-resistant and do not fade easily.

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What are the dimensions for the markings in Subject 2?

What kind of engine oil is best for Jetta VS5?

Is it a traffic violation to make a U-turn on the sidewalk?

Why Can't I Always Shift into Reverse Gear When Practicing Driving?

How to Solve Chain Noise Issues?

Is a Tire Produced Half a Year Ago Considered New?

How to Identify the Authenticity of LLumar Car Window Film?

What is the best engine oil for BMW 7 Series?

Does the BYD Han DM Use a Blue License Plate or a Green License Plate?

When to Use the M Gear in the Sagitar?

What Causes the Clicking Sound When the Baojun 510 Fails to Start?