In which year did the China IV emission standard engines begin?

5W30 or 5W40 for All-Season Engine Oil?

Different vehicles require different engine oils. American, Japanese, and Korean cars generally perform best with 5W-30 oil, while German cars typically use 5W-40. Both 5W30 and 5W40 are all-season oils with similar cold-start performance. However, 5W-40 has higher viscosity than 5W-30, providing better protection under high-temperature conditions. Here is additional information: 1. Winter oils: Winter oil grades include 0W, 5W, 10W, 15W, 20W, and 25W. The "W" stands for winter, and the lower the number before it, the lower the oil's viscosity at low temperatures, the better its cold-flow performance, and the lower the minimum applicable temperature. 2. Summer oils: Summer oil grades include 20, 30, 40, and 50. The higher the number, the higher the viscosity and the higher the maximum applicable temperature. 3. All-season oils: All-season oil grades include 5W-20, 5W-30, 5W-40, 5W-50, 10W-20, 10W-30, 10W-40, 10W-50, 15W-20, 15W-30, 15W-40, 15W-50, 20W-20, 20W-30, 20W-40, and 20W-50. The lower the winter number (indicating a lower minimum temperature), and the higher the summer number, the wider the applicable temperature range.

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What Does a Three-Year or 100,000-Kilometer Car Warranty Cover?

ORA is Great Wall Motors' Ora brand. Ora ORA is a new energy vehicle brand under Great Wall Motors, but its name originates from a person, commemorating the world-renowned mathematician Mr. Euler. "Ora" symbolizes Great Wall Motors' commitment to meticulous craftsmanship and building high-quality cars. Ora's vehicle lineup includes: Ora Ballet Cat, Ora Black Cat, Ora iQ, Ora Punk Cat, Ora Good Cat, Ora Good Cat GT, Ora Lightning Cat, and Ora White Cat. Ora is Great Wall Motors' electric vehicle brand, established in 2018. Among Chinese automakers, Great Wall was the first to manage its new energy vehicle business as an independent brand. With the launch of the Ora ORA brand, China's first dedicated electric vehicle platform—the ME platform—was introduced. This platform integrates advanced smart and connected technologies from the chassis to the interior and exterior, achieving substantial breakthroughs in space, safety, and efficiency. The development milestones of Great Wall Ora are as follows: April 25, 2018: Debuted as Great Wall Motors' independent new energy brand at the Beijing International Auto Show. August 20, 2018: The Ora brand was officially launched. August 31, 2018: Ora iQ was released at the Chengdu Motor Show. April 2019: Ora iQ Travel Edition was launched. August 27, 2019: Ora R1 Family Edition was released. September 5, 2019: Two new series and five models of Ora's latest products were unveiled at the Chengdu Motor Show. July 24, 2020: Ora R1 was renamed Ora Black Cat and launched at the Chengdu Motor Show. January 14, 2021: Ora Black Cat Pet Edition was released. March 20, 2021: Ora announced a new brand positioning as a car brand that "loves women more," establishing the correct industry values for female users. May 17, 2022: Ora announced that the 2022 Ora Good Cat Morandi Edition was open for pre-orders.

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What Are the Causes of High Temperature in Cars?

Engine's air charging coefficient decreases, abnormal engine combustion, engine oil deterioration, fuel supply system prone to vapor lock, and ignition system malfunction. Additional details: 1. Decrease in engine's air charging coefficient: Higher temperatures lead to lower air density, reducing the actual air intake of the engine; overheating of the engine increases the temperature under the hood, further decreasing the engine's air charging capability. The reduced air charging coefficient results in decreased engine power, causing the car to lose driving force. 2. Abnormal engine combustion: High ambient temperatures raise the temperature of the air-fuel mixture entering the cylinders, increasing the overall operating cycle temperature of the engine. Coupled with the radiator's reduced cooling efficiency, the engine becomes overheated. The end-gas mixture in the combustion chamber absorbs more heat, accelerating pre-flame reactions and increasing the likelihood of engine knocking. 3. Fuel supply system prone to vapor lock: Higher temperatures increase the temperature under the hood, making vapor lock more likely. When the fuel system heats up, some gasoline evaporates into gas, accumulating in the fuel lines and fuel pump, increasing fuel flow resistance and disrupting the vacuum created by the fuel pump during the suction stroke. This leads to insufficient or interrupted fuel supply, causing vapor lock in the fuel system. 4. Ignition system malfunction: When driving in high-temperature environments, the ignition coil can overheat, weakening the high-voltage spark and causing high-speed misfires. In severe cases, the ignition coil may burn out, affecting the car's normal operation.

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What is the problem of high-speed body shaking?

High-speed body shaking issues are as follows: 1. Uneven brake disc surface: The brake disc surface is uneven with a large radial runout, caused by uneven braking force or brake pad misalignment. 2. Excessive tire pressure: When the vehicle's tire pressure is too high, the shaking is particularly noticeable when driving at high speeds on uneven roads, making it easy for the driver to feel the body shaking and veering. 3. Severe tire wear: Severe tire wear with significant imbalance in dynamic balance. Due to uneven wear or large dynamic imbalance, the tire may jump during high-speed operation, causing the body to shake. 4. Engine issues: Generally caused by fuel quality or ignition problems. At high speeds and under high load, fuel quality and ignition determine the power output. If either is abnormal, it can lead to engine weakness and shaking.

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What to Do When the Fuel Tank Cap Won't Open?

The fuel tank cap may not open due to it being stuck or rusted. Here are some relevant explanations about why the fuel tank cap won't open: 1. Precautions: Some vehicles are equipped with an emergency release for the fuel tank cap. In many vehicles, the emergency release is located in the trunk, under a small panel on the side of the fuel tank cap. Pull the emergency handle firmly while pressing the fuel tank cap to open it. After refueling, it is advisable to check the control circuit of the fuel tank cap as soon as possible. 2. Other Causes and Solutions: The fuel tank cap might also fail to open because it is frozen in extremely cold weather. In such cases, use appropriate methods based on the situation, such as pouring hot water or forcing it open. It is recommended to regularly clean the fuel tank cap. There is usually a drainage hole under the fuel tank cap. If this hole is blocked, or if water accumulates easily during car washing or in rain or snow, it can freeze and cause the fuel tank cap to stick.

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Do 4S stores buy used cars?

Some 4S stores can recycle used cars. Here is some relevant information about 4S stores recycling used cars: 1. Description: Some 4S stores have the business of used car recycling. In addition to the traditional main businesses of new car sales and maintenance, used cars are actually an important profit-making business for many 4S stores. After refurbishing the used cars they have recycled or taken in trade, 4S stores sell them to used car dealers or individuals, which also generates profit. 2. Notes: When selling an old car to a 4S store, the transfer of ownership is temporarily not processed; it is only completed when the vehicle is actually sold to a buyer. However, some 4S stores offer services similar to "full-price direct sales," where the 4S store evaluates and inspects the old car, negotiates a suitable price with the seller, and then directly purchases the car at full price, providing transfer services. The ownership is usually transferred to the 4S store or an employee.

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In which year did the China IV emission standard engines begin?

5W30 or 5W40 for All-Season Engine Oil?

What Does a Three-Year or 100,000-Kilometer Car Warranty Cover?

What Are the Causes of High Temperature in Cars?

What is the problem of high-speed body shaking?

What to Do When the Fuel Tank Cap Won't Open?

Do 4S stores buy used cars?

What does ADS mean on a car?

How to Use the 12V Power Outlet in a Car?

Can National V Emission Standard Vehicles Still Be Registered in Henan Province?

Can a new car drive on the highway directly?