What is the principle of the windshield wiper?

Can a 10-year-old Polo use 5W30 engine oil?

A 10-year-old Polo can use 5W30 engine oil. Normally, for new cars driven gently, 5W30 oil is suitable. For older vehicles with higher mileage, 5W40 oil is recommended. Below are the methods for checking engine oil level and usage precautions: Method for checking engine oil level: After allowing the oil to circulate through the engine, wait for 10 to 30 minutes before checking the dipstick's fluid level. The height on the dipstick indicates the engine oil condition. Precautions for using engine oil: Select oil according to the engine's requirements, ensuring compatibility. Multi-grade oils are preferred as they offer advantages like fuel efficiency, extended service life, and superior protection for the engine. The oil level should be slightly below the dipstick's maximum mark—avoid overfilling.

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Is driving over 70 considered speeding when the speed limit is 70?

When the speed limit is 70, driving above 70 is considered speeding. Exceeding the prescribed speed limit constitutes speeding, and traffic laws stipulate that exceeding the speed limit by more than 10% is considered a violation. Below is the relevant information: No speeding: Motor vehicles driving on the road must not exceed the maximum speed indicated by speed limit signs. On roads without speed limit signs, a safe speed should be maintained. Lane classification: If there are two or more motor vehicle lanes in the same direction, the left lane is the fast lane, and the right lane is the slow lane. Vehicles driving in the fast lane should maintain the speed specified for the fast lane. Vehicles that cannot reach the specified speed of the fast lane should drive in the slow lane.

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Where is the crankcase ventilation valve located on the Passat Lingyu?

Volkswagen Passat's crankcase ventilation valve is located below the intake manifold. Precautions for crankcase usage: If the crankcase ventilation check valve is damaged, it will cause increased pressure in the crankcase, excessive oil consumption, and affect exhaust emissions. Timely inspection and replacement are required if the crankcase ventilation valve is damaged or malfunctioning. Function of the crankcase: The crankcase is one of the most critical components in the engine. It bears the force transmitted from the connecting rod and converts it into torque output through the crankshaft to drive other engine accessories. The crankcase is subjected to centrifugal forces from rotating masses, periodically varying gas inertial forces, and reciprocating inertial forces, causing the crankshaft to endure bending and torsional loads. It also prevents oil deterioration and leakage from the crankshaft oil seals and crankcase gaskets.

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Can Different Motor Oils Be Mixed?

Motor oils should not be mixed. Different brands and grades of motor oils contain various additives tailored to the specific working characteristics and environmental requirements of different engines, resulting in variations in viscosity, anti-wear properties, corrosion resistance, anti-knock performance, and volatility. Mixing them may degrade the oil's performance and even cause damage to the engine. Here are the reasons why motor oils should not be mixed: 1. Mixing new and used oils reduces performance: Used oil contains a significant amount of oxidative substances. When new oil is mixed with used oil, the oxidation rate of the new oil increases, thereby reducing its effectiveness and service life. 2. Mixing oils can cause turbidity: Oils of different brands and grades should not be mixed. Since the chemical additives in oils vary by brand and grade, these additives may sometimes react with each other, reducing lubrication effectiveness and producing acidic or alkaline compounds that accelerate the corrosion of engine components.

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How many engine displacements does the Leiling have?

The Leiling has three engine displacement options: 1.2T, 1.5L, and 1.8L. Below is an introduction to the Leiling's engine displacements: 1. The 1.2T is a turbocharged engine. 2. The 1.5L is a naturally aspirated engine. 3. The 1.8L is a naturally aspirated engine. Here is some extended information about the advantages of the Leiling: 1. The new-generation Leiling, based on the TNGA architecture, features a double-wishbone rear independent suspension. 2. It comes standard with 8 airbags, offering exceptional safety performance. 3. It is equipped with standard electronic parking brakes and automatic hold, which can free your feet in congested traffic. 4. Paired with a 1.2T engine and a simulated 10-speed CVT transmission, it ensures both fuel efficiency and smooth acceleration.

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What is the fault when a car's air conditioning has high low pressure and low high pressure?

Car air conditioning has high low pressure and low high pressure because: the displacement produced by the compressor does not meet the requirements, leading to expansion valve failure; the lack of cooling is due to insufficient refrigerant in the compressor. Details are as follows: The displacement produced by the compressor does not meet the requirements: If there is high low pressure and low high pressure, it needs to be repaired, and professionals should check all faults. If the compressor's high-pressure pipe turns black, it needs to be replaced. When the air conditioning operates at normal pressure, it is fine. Insufficient refrigerant: If there is insufficient refrigerant, you can add some refrigerant. Compressor faults need to be checked for blockages or leaks. Blockages are due to dirt and need to be cleaned, while leaks require repairing the leakage points.

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What is the principle of the windshield wiper?

Can a 10-year-old Polo use 5W30 engine oil?

Is driving over 70 considered speeding when the speed limit is 70?

Where is the crankcase ventilation valve located on the Passat Lingyu?

Can Different Motor Oils Be Mixed?

How many engine displacements does the Leiling have?

What is the fault when a car's air conditioning has high low pressure and low high pressure?

What does IZOA OFF mean?

What to do if 12 points are deducted from a driver's license within one year?

Subject 3 Gear Shifting Operation?

How to Reactivate a Battery That Has Been Stored for Two Years?