What are the main components of engine oil?

What brand of tires does the Geely Emgrand use?

Geely Emgrand uses tires from the brands Giti and Linglong, with a tire specification of 205/55R16 and a spare tire specification of 125/80R15. Tires are circular elastic rubber products mounted on various vehicles or machinery to roll on the ground, typically installed on metal rims. They support the vehicle body, absorb external shocks, ensure contact with the road surface, and guarantee the vehicle's driving performance. The Geely Emgrand is a compact car with body dimensions of 4632mm in length, 1789mm in width, and 1470mm in height, with a wheelbase of 2650mm. It is equipped with a 1.5L naturally aspirated engine, delivering a maximum power of 80kW at 6000 rpm, paired with a 5-speed manual transmission.

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What to Pay Attention to When Changing Engine Oil for Cars

When changing engine oil for cars, the following points should be noted: 1. Drain the oil when it is hot for better fluidity; 2. Fill to the level indicated on the dipstick; 3. Choose the oil type based on driving conditions, driving frequency, and the requirements of the vehicle's engine. The types of engine oil vary depending on different factors: 1. Depending on the engine, it can be divided into diesel engine oil and gasoline engine oil; 2. Depending on quality and performance, it can be divided into full synthetic oil, semi-synthetic oil, and mineral oil. The functions of changing engine oil include: 1. Lubricating the piston, piston rings, and cylinder; 2. Lubricating the intake valve stem; 3. Reducing engine friction and high temperatures; 4. Cleaning carbon deposits, sludge, and worn metal particles.

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Is the BMW 320 a front-wheel drive or rear-wheel drive car?

The BMW 320 is a rear-wheel drive car. The characteristics of rear-wheel drive cars include: 1. High balance, stability, and handling during vehicle operation; 2. The engine, clutch, and transmission are close to the driver's compartment, facilitating vehicle maintenance and repairs; 3. During vehicle start-up, acceleration, and uphill driving, the center of gravity shifts backward, enhancing rear-wheel traction, which benefits start-up and acceleration operations, increases safety, and improves driving stability and comfort. Taking the BMW 320i as an example, its body dimensions are: length 4719mm, width 1827mm, height 1459mm, wheelbase 2851mm, fuel tank capacity 59l, maximum horsepower 156ps, maximum power 115kw, maximum torque 250nm, and maximum torque speed range 1250 to 4000rpm.

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What to Do If the Car Stalls in Water and Attempts a Second Start?

If the car stalls in water and attempts a second start, it is recommended to immediately call the insurance company's tow truck to have the car towed away and then take it to a 4S shop for repairs. It is important to note that if you have purchased water-related insurance, the insurance company will not cover the costs if you attempt a second ignition after stalling in water. The correct steps to take when a car stalls in water are: 1. Stay calm and turn off the ignition switch; 2. Remove the negative terminal of the battery to prevent short circuits in the vehicle's electrical systems due to water ingress; 3. Move the vehicle to a safe location; 4. Check whether water has entered the engine cylinders; 5. Inspect the condition of the fluids in the vehicle's various systems; 6. Clean the fuse box, sensor connectors, and areas where water has accumulated on the body.

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Should the car's heating system use internal or external air circulation?

Whether to use internal or external air circulation for the car's heating system depends on different situations: 1. When driving in congested urban roads, use internal circulation; 2. When driving on highways or long-distance routes, use external circulation to replenish fresh air in the car, which is beneficial to the health of passengers. Internal circulation mode closes the airflow channel between the inside and outside of the car. Without the fan, there is no airflow circulation, and when the fan is on, the inhaled airflow only comes from inside the car, forming an internal airflow circulation. External circulation mode uses the fan to draw air from outside into the car, where the air passage between the outside and inside of the car is open. The air blown by the fan comes from outside the car, and while the car is moving, airflow is drawn into the car to replenish fresh air.

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What is a Space Shuttle Bus?

In fact, it is a device that refers to an independently flying space vehicle added to the rocket's basic stage. After the rocket transports the upper stage to a certain orbit, it can fly autonomously and ignite multiple times, directly delivering one or more spacecraft into different orbital spaces. According to CCTV, the upper stage is vividly referred to as a "space shuttle bus." It takes over the rocket's flight in space, starting its journey hundreds of kilometers away from Earth, making it a true "expedition." Introduction to the Space Shuttle Bus: China's first "space shuttle bus," the Long March-3C/Expedition-1, will be used in future deep-space exploration missions such as lunar and Mars exploration. The Long March-3C/Expedition-1 adds an additional stage to the original three-stage Long March-3C rocket, turning it into a four-stage rocket. The main task of the four-stage rocket is to carry satellites that can directly enter orbit. Previously, three-stage rockets could only deliver satellites to a transfer orbit, meaning the orbit launched by the three-stage rocket was elliptical, and the satellite needed to adjust to a circular orbit. The improved four-stage rocket can directly send satellites to more distant target orbits without the need for further orbital adjustments. The flight of a three-stage rocket takes only about half an hour, while the four-stage rocket requires 4 to 6 hours of flight, reaching tens of thousands of kilometers into outer space. Features of the Space Shuttle Bus: It has autonomous orbital maneuverability, long in-orbit flight duration, and can generally ignite multiple times to meet the needs of different launch missions. It can deliver one or multiple payloads (such as satellites, space probes, etc.) to predetermined orbits, much like an airport shuttle bus. It combines the technical characteristics of both a carrier and a spacecraft, being an additional relatively independent stage or stages on the launch vehicle or reusable launch vehicle, capable of continuing flight with its own power to carry spacecraft. It can ignite multiple times. After the launch vehicle delivers it into space, the "space shuttle bus" can ignite multiple times to meet the needs of different launch missions. It has a long operational duration, exceeding that of the launch vehicle, ranging from several hours to several days or even tens of days. The Expedition-1 upper stage is the first to use liquid propellant, with an in-orbit operational time of 6.5 hours. It can sequentially deliver different "passengers" to different destinations. In space, the "space shuttle bus" takes over the rocket's flight mission and can directly deliver one or multiple spacecraft to their work locations through changes in flight trajectory.

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What are the main components of engine oil?

What brand of tires does the Geely Emgrand use?

What to Pay Attention to When Changing Engine Oil for Cars

Is the BMW 320 a front-wheel drive or rear-wheel drive car?

What to Do If the Car Stalls in Water and Attempts a Second Start?

Should the car's heating system use internal or external air circulation?

What is a Space Shuttle Bus?

What brand of tires does Tesla come with?

What type of transmission does the RAV4 use?

Can a C1 License Drive Automatic Transmission Vehicles?

How to Defrost Car Windows in Winter?