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Can Motor Oils of Different Grades Be Mixed?

1 Answers

EmilioMarie

07/30/25 7:36am

Motor oils of different grades should not be mixed. Although the lubricating properties remain unchanged when two different grades of oil are mixed, the composition of the oil will change. Mixing can degrade the performance of the oil and may even cause damage to the engine, so it is not recommended to mix motor oils of different grades. Motor oil serves multiple functions, including lubrication and friction reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, and shock absorption. Motor oil consists of base oil and additives. The base oil is the main component of lubricating oil, determining its fundamental properties, while additives compensate for and improve any deficiencies in the base oil's performance, making them an essential part of the lubricating oil.

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Will I be fined if my vehicle is impounded for not passing the annual inspection?

Vehicles that fail to undergo annual inspection will be impounded and fined. Vehicle annual inspections are divided into initial inspections and regular inspections. Initial inspection: Check whether there is a vehicle user manual, certificate of conformity (inspection certificate for imported vehicles), and whether the factory sample marks on the vehicle body are complete. Measure the internal and external contour dimensions, wheelbase, and axle distance of the vehicle. Specific measurement items include vehicle length, width, height, cargo compartment panel height and area, wheelbase, axle distance, etc. Regular inspection: Inspect whether the engine, chassis, body, and their auxiliary equipment are clean, complete, and effective, whether the paint surface is uniform and aesthetically pleasing, whether major assemblies have been replaced, and whether they match the initial inspection records, etc.

What is the difference between Su E and Su U?

Su U and Su E license plates are both from the Suzhou area of Jiangsu Province. Since the Su E license plates were exhausted, the new Su U license plates were introduced. There is no difference between Su E and Su U. Below is an introduction to the license plates in Jiangsu: 1. Su A Nanjing, Su B Wuxi, Su C Xuzhou, Su D Changzhou, Su E Suzhou; 2. Su F Nantong, Su G Lianyungang, Su H Huaian, Su J Yancheng, Su K Yangzhou; 3. Su L Zhenjiang, Su M Taizhou, Su N Suqian, Su U Suzhou supplement. Additional information: The license plate issuing authority is the vehicle registration authority, which includes the public security departments of provinces, autonomous regions, and municipalities directly under the central government, as well as vehicle management offices of cities, prefectures, and leagues.

What to Do After Jump-Starting a Car?

After jump-starting a car, you need to put the jumper cables back in the trunk to prepare for the next use. More relevant information is as follows: 1. When the car runs out of power, you can use jumper cables to charge the car battery. Jumper cables can usually be purchased at auto repair shops and are generally stored in the trunk of the car to avoid being unable to charge when the car battery is dead. 2. When connecting the batteries of two cars, do not confuse the connection order of the jumper cables, otherwise charging will fail. First, connect the positive terminal of the dead battery to the positive terminal of the rescue car's battery, then connect the negative terminal of the rescue car's battery to a metal part of the dead battery. The charging time is about 5 minutes, which can provide an emergency charge to the dead battery, supplying enough starting current for the car to operate.

Will car insurance cover damages if a car is hit during a typhoon?

If you have purchased vehicle damage insurance, the insurance company will provide compensation. Car insurance: Motor vehicle insurance, also known as auto insurance (referred to as car insurance), is a type of commercial insurance that covers personal injuries or property damage caused by natural disasters or accidents involving motor vehicles. Historical background: The world's first car insurance policy appeared in the United States in 1898. The Travelers Insurance Company Limited in the U.S. issued the first car insurance policy to Truman Martin of Buffalo, New York, in 1898. Martin was very worried that his beloved car might be hit by a horse. At that time, there were only a little over 4,000 cars in the entire United States, while the number of horses reached 20 million, and horse-drawn carriages were still the primary means of transportation.

Does Insurance Cover the Full Cost of Replacing a Car Door?

Insurance will only cover the replacement of a car door if the damage meets the standard for door replacement. Cases where insurance does not cover door replacement: If the damage to the door does not meet the replacement criteria, such as scratches, paint damage, or minor deformations, the insurance company will typically cover repairs instead. Cases where insurance covers door replacement: If the damage to the door is severe and repairs are not cost-effective, replacement may be approved. For example, if the deformation area exceeds 70%, replacement may be considered, depending on the extent of deformation. Other cases include cracks inside the door, metal bending at corners, or damage to reinforcement ribs and structural components.

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Strictly speaking, a car is a consumable product because it undergoes wear and tear during operation. Automobile: According to China's latest standard "Terms and Definitions of Motor Vehicles and Trailers" (GB/T 3730.1-2001), a car is defined as follows: a non-track vehicle powered by a motor with four or more wheels, mainly used for transporting people and/or goods; towing vehicles that carry people and/or goods; or for special purposes. Electric Vehicle: The world's first research on electric vehicles was conducted by Hungarian engineer Ányos Jedlik, who completed an electric transmission device in the laboratory in 1828. The first practical electric vehicle was invented by American Anderson between 1832 and 1839. The battery used in this electric vehicle was relatively simple and could not be recharged.

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