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What is the purpose of adding engine oil to a car?

1 Answers
RoseDella
07/29/25 3:51pm
Adding engine oil to a car ensures the normal operation of the engine. Engine oil, also known as engine lubricant, is composed of base oil and additives. Its functions include: 1. Lubrication; 2. Assisting in cooling and temperature reduction; 3. Cleaning; 4. Sealing and preventing leaks; 5. Rust and corrosion prevention; 6. Shock absorption and cushioning, as well as anti-wear. Engine oil is classified by viscosity into: 1. Four-stroke engine oil; 2. Two-stroke engine oil. Engine oil can also be selected based on usage conditions: 1. Diesel engine oil: Chosen according to the combined mechanical and thermal loads of the car engine and the severity of the engine's operating conditions; 2. Gasoline engine oil: Selected based on the severity of the engine's operating conditions, additional devices in the car's intake and exhaust systems, and the production year.
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How to Tighten a Loose Motorcycle Chain?

Lift the rear wheel off the ground, loosen the axle nut in the center of the rear wheel, and release the lock nuts on both sides of the chain adjusters. Turn the adjusters backward a few turns, then tighten the lock nuts while observing the chain tension. Adjust both sides evenly until the tension feels appropriate. Additionally, avoid over-tightening the chain, as it can damage the countershaft bearing and needle rollers, and significantly reduce the lifespan of the rear wheel cushion bearing. The ideal chain slack should be maintained between 15mm to 20mm. Below are specific details about motorcycle chains: 1. Function of the Chain: The motorcycle chain connects the transmission output gear to the rear wheel drive gear. If it's too loose, it cannot ensure proper gear ratio and power transmission; if too tight, it may wear out or break. It's best to promptly inspect and replace a loose chain at a repair shop. 2. Effects of Poor Maintenance: If the chain is not regularly maintained, poor lubrication can cause increased friction during operation, leading to power loss in the engine. Long-term improper operation may also result in chain loosening or even detachment. Therefore, regular cleaning and lubrication maintenance are necessary for the chain.
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What is the tire model of the vv6?

The tire model of the vv6 is 235/55R19. The first number 235 represents the tire width of 235MM, 55 indicates the aspect ratio of the tire section is 55%, meaning the section height is 55% of the width. The letter R stands for radial tire, and 19 denotes the rim diameter of 19 inches. The vv6 has a top speed of 120km/h, accelerates from 0-100km/h in 8.28 seconds, and has a fuel consumption of 1.5L per 100km. In addition to the model, the tire also displays the following common data: Tire cord material: Represented by Chinese pinyin, such as M-cotton cord, R-rayon cord, N-nylon cord, G-steel cord, ZG-steel radial cord tire. Speed rating: Indicates the maximum speed at which the tire can carry a specified load under defined conditions. Letters from A to Z represent certified speed ratings ranging from 4.8km/h to 300km/h. Commonly used speed ratings include: Q: 160km/h; H: 210km/h; V: 240km/h; W: 270km/h; Y: 300km/h; Rim specification: Shows the compatible rim size for the tire, facilitating practical use, such as standard rim 5.00F.
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What is the process for retaining the original license plate number when selling a car?

After the car is transferred, the original license plate can be retained by the original owner for 6 months. When applying for the registration of a newly purchased vehicle after completing the transfer or cancellation registration of the original motor vehicle, the original owner can apply to the vehicle management office to use the original license plate number. In Beijing, after selling an old car, the license plate is reserved for the original owner, and the new owner who purchases a used car cannot use the original license plate but must select a new number for registration. The documents required for retaining the license plate when selling a car include: 1. The original and a copy of the owner's ID card. 2. "Motor Vehicle Transfer or Registration Application Form." 3. Proof of compulsory traffic insurance for the vehicle. 4. Annual inspection qualification certificate. 5. Whole vehicle factory qualification certificate. 6. Proof of origin of the motor vehicle. 7. For imported vehicles, additional documents such as import certificates, proof of paid purchase tax, and various materials submitted during vehicle registration are required. The conditions for retaining the original license plate after selling a car are as follows: 1. The vehicle must have been used for at least one year to retain the original license plate, and the retention period can be up to 1 year. 2. The original license plate can be retained if the vehicle is transferred, canceled, or relocated. 3. Both purchasing a used car and a new car are eligible for applying to retain the original license plate. 4. All traffic violation records of the original vehicle must be settled.
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Where to insert the USB drive in Venucia D60?

The USB drive in Venucia D60 is inserted into the USB port located inside the small compartment below the control screen. The USB port is a type of vehicle transmission cable, featuring advantages such as fast transmission speed, ease of use, support for hot-plugging, flexible connection, and independent power supply. It is generally a universal interface for USB devices like USB drives and MP3 players. The dimensions of the Dongfeng Venucia D60 are 4756mm in length, 1803mm in width, and 1487mm in height, with a wheelbase of 2700mm. In terms of power, the Venucia D60 is equipped with a Nissan HR16 1.6L engine, delivering 126 horsepower and a peak torque of 154 Nm. The transmission paired with the engine is a CVT gearbox, and it adopts a combination of front MacPherson independent suspension and rear torsion beam non-independent suspension.
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At what voltage level will a car battery fail to start the engine?

When a car battery's open-circuit voltage drops below 12.2V or its load voltage falls under 9.5V, the vehicle will experience significant difficulty starting. Car owners should regularly inspect their vehicle's battery through the observation window on the battery. If the window displays black, it indicates the need for charging; green signifies good condition, while white suggests insufficient electrolyte levels. Also known as an accumulator, a car battery operates by converting chemical energy into electrical energy. The commonly referred-to car battery is a lead-acid battery, primarily composed of lead and its oxides, with sulfuric acid solution serving as the electrolyte.
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How Many Years Until Commercial Vehicles Are Scrapped?

Small and mini commercial passenger vehicles are scrapped after 10 years, while large and medium-sized commercial passenger vehicles are scrapped after 15 years. Below is the specific process for vehicle scrapping: 1. Fill out the application form: The vehicle owner must bring their ID card, vehicle registration certificate, vehicle license, and license plate to the business department of the vehicle dismantling factory to fill out the "Application Form for Vehicle Suspension, Resumption/Cancellation of Registration." 2. Issue a notice: Go to the license management counter to wait for notification of fees and surrender the license plate. Apply at the registration acceptance counter, where a "Vehicle Scrapping Notice" will be issued for vehicles that have reached the scrapping age. For vehicles that have not reached the scrapping age, the vehicle inspection counter will determine if they meet the scrapping standards and issue a "Vehicle Scrapping Notice." 3. Submit for dismantling: The vehicle owner can choose a qualified recycling company to dismantle the vehicle with the "Notice." The recycling company will dismantle the vehicle and take photos after verifying the "Notice." The engine must be separated from the vehicle, the engine block must be broken, and the frame (chassis) must be cut. 4. Complete the scrapping registration: The vehicle owner must submit the "Change Form," "XX Province Vehicle Update Technical Appraisal Form," "Scrapped Vehicle Recycling Certificate," and photos of the dismantled vehicle to the vehicle inspection counter for verification and signature. The license plate will be reclaimed, and the scrapping registration will be processed after approval according to regulations.
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