How much Freon should be added to a Corolla's air conditioning system?

How much over the speed limit is driving at 90 in an 80 zone?

Driving at 90 in an 80 zone is 12.5% over the speed limit. According to traffic regulations, exceeding the speed limit by 10% but less than 20% results in 3 penalty points and a fine of 200 yuan. No penalty is imposed for exceeding the speed limit by less than 10%, meaning if the speed does not exceed 80 km/h, there will be no fine. Speeding refers to driving a motor vehicle or non-motor vehicle on the road at a speed exceeding the designated limit for that section. Speeding is a traffic violation that is more likely to lead to serious accidents. The braking distance of a vehicle is mainly constrained by speed; due to inertia, the faster the speed, the longer the braking distance, increasing the likelihood of an accident.

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Does a Car Consume Much Fuel at Idle?

Different engines have varying fuel consumption. For household cars, it's around 2 liters, but the exact amount depends on your car's displacement and idle speed. The larger the displacement, the higher the fuel consumption at idle. For a 1.6L displacement at around 800 RPM, it's approximately 0.8L per hour. Here is some information about car idling: 1. Car idling refers to an operating condition. When the engine runs without load, it's called idling, meaning the car is in neutral gear. The engine speed during idling is called the idle speed. The idle speed can be adjusted by changing the throttle opening size, etc. Idling means the engine is "working without output." 2. Normal idle: When the vehicle is parked and the engine is started, the minimum stable engine speed is called the parking idle. 3. Driving idle: When the car is in gear without pressing the accelerator pedal or when the accelerator pedal is released while driving, maintaining the minimum throttle opening, the engine speed matches the parking idle speed. This state is called driving idle.

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What Type of Engine Oil Should Be Used for the First Car Maintenance?

For naturally aspirated engine models, synthetic or full synthetic engine oil is recommended, while turbocharged engine models should use full synthetic engine oil. The first maintenance oil is usually provided free of charge by the 4S shop. When most new cars go to the 4S shop for their first maintenance, the oil that will be replaced for free is usually mineral oil. If you want to use synthetic oil, you must pay an additional fee. Below are specific details about engine oil: 1. Engine oil can be divided into three types based on its chemical composition: full synthetic, synthetic, and mineral. 2. In addition to the type of engine oil, pay attention to the oil model. Engine oil models usually follow two standards—SAE and API. SAE indicates the oil viscosity specification, while API represents the oil quality grade.

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What Does Vehicle Scratch Insurance Cover?

Here is a detailed introduction to the coverage of scratch insurance: 1. Coverage Scope: Scratch insurance can cover damage to the car's paint caused by sharp objects. However, car owners should note that losses resulting from collisions with other objects, such as vehicle collisions or scraping against fixed objects, are not covered by scratch insurance but fall under the category of vehicle damage insurance. 2. Insurance Liability for Scratches: The insurance liability of scratch insurance is for malicious acts by others that cause artificial scratches on the insured vehicle's body. Losses caused by intentional actions of the insured and their family members, or the driver and their family members, are excluded from coverage.

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Do Cars Need to Warm Up in Summer?

Do Cars Need to Warm Up in Summer? Here are the specific details about car warm-up: 1. Warm-up time: Cars need to warm up in all seasons, requiring at least 15 seconds before slowly moving out. 2. Other operations: Besides warming up, you should also wait until the coolant temperature gauge reaches the normal range before turning on the car's air conditioning. Here is additional information about car warm-up: 1. Long-term unused cars: The upper part of the engine lacks oil and lubrication when starting. After 30 seconds of operation, the oil pump will deliver oil to the parts of the engine that need lubrication the most. 2. Engine not reaching operating temperature: Before the engine reaches its operating temperature, the fuel system cannot effectively vaporize gasoline completely due to low temperature.

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Can 0W-40 engine oil be used in summer?

0W40 engine oil has a viscosity rating of 40 after the W, which refers to the oil viscosity at 100°C. This indicates that 0W40 oil has higher viscosity at high temperatures, providing excellent protection and making it suitable for summer use. Advantages and disadvantages of Mobil 0W-40W engine oil: 1. Contains active detergents to prevent carbon deposits and sludge buildup, keeping the engine clean and extending its lifespan; 2. Outstanding thermal and oxidation stability, delaying oil aging and extending oil change intervals; 3. Low oil consumption, reducing hydrocarbon pollution; 4. Good friction characteristics, leading to higher fuel efficiency; 5. Excellent low-temperature performance, enabling quick cold starts and rapid protection.

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How much Freon should be added to a Corolla's air conditioning system?

How much over the speed limit is driving at 90 in an 80 zone?

Does a Car Consume Much Fuel at Idle?

What Type of Engine Oil Should Be Used for the First Car Maintenance?

What Does Vehicle Scratch Insurance Cover?

Do Cars Need to Warm Up in Summer?

Can 0W-40 engine oil be used in summer?

What to Do When the Brake Lights Stay On After the Car is Turned Off?

Why Do Novice Drivers Tend to Veer Off Course?

Brief Description of the Steps for Removing and Dismantling Car Wheels?

What is the sequence for tightening cylinder head bolts?