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What is the flash point of automotive engine oil?

1 Answers
MacMackenzie
07/30/25 7:39am
The flash point of automotive engine oil refers to the temperature at which the oil may pose an explosion risk when reached. Under normal atmospheric pressure, the flash point of gasoline is 427°C. Below is detailed information about automotive engine oil: 1. Overview: Engine oil, also known as engine lubricant (English name: Engine-oil), has a density of approximately 0.91×10³ (kg/m³). It serves multiple functions including lubrication and wear reduction, auxiliary cooling, sealing and leakage prevention, rust and corrosion protection, as well as shock absorption. 2. Composition: Engine oil consists of two main components - base oil and additives. The base oil forms the primary constituent of lubricants, determining their fundamental properties. Additives are designed to compensate for and enhance the performance limitations of base oils, while also imparting new characteristics, making them essential components of lubricants.
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What happens if you don't change transmission oil for 300,000 kilometers?

The effects of not changing transmission oil for 300,000 kilometers are as follows: 1. If transmission oil is not replaced for a long time, metal shavings inside the transmission will accumulate more and more. When they reach a certain level, they will affect the physical properties of the transmission oil, thereby impacting the engagement of clutch plates and the operation of gears, leading to a significant reduction in clutch pressure and increased metal wear between gears. 2. The ultimate result will be a severe drop in power, to the point where the car may not move even in D gear. At this stage, the drained transmission oil will definitely contain a large amount of metal shavings. 3. It will cause the transmission to overheat. Besides lubrication, transmission oil also functions to cool the transmission. Long-term failure to replace old oil will cause the transmission to continuously overheat, which will further weaken the viscosity and lubricity of the transmission oil, creating additional friction. Components of automatic transmissions such as O-rings, gaskets, rubber rings, and sealing parts may also deform or melt due to overheating.
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What Do Maximum Power and Maximum Torque Mean in Cars?

Car power and torque respectively represent the speed and climbing ability of a vehicle. Power is a physical quantity that measures the maximum speed of a car, while torque measures the acceleration capability. A higher power results in a greater top speed, and higher torque leads to better acceleration performance. Maximum power and maximum torque are the physical quantities used to measure a car's maximum speed and maximum acceleration capability. Below is a detailed introduction to car power and torque: 1. Car power refers to the work done by the car per unit time; power is the work done by an object per unit time. The greater the power, the higher the torque, and the stronger the pulling force of the car. Maximum power is commonly used to describe the dynamic performance of a car. 2. Car torque is the moment output from the crankshaft end of the engine. The higher the torque of a car, the better its response to operation. Compared to similar engine sedans, a higher torque output means greater load capacity, better acceleration performance, stronger climbing ability, fewer gear shifts, and relatively less wear on the car. Especially during zero-speed starts, cars with higher torque demonstrate the advantage of faster speed increase.
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What to Do If Your License Plate Number Is Registered by Someone Else for ETC?

According to the unified deployment by the Ministry of Transport, vehicle owners can use the "China ETC Service" WeChat mini-program to self-service release the license plate occupation function. The specific steps are as follows: 1. Register and log in on the "China ETC Service" WeChat mini-program, then enter "My ETC." 2. On the "My ETC" page, select the "Release License Plate Occupation" option and choose the vehicle type as "Passenger Car" or "Truck" based on your situation. 3. Submit photos of the front and back of your ID card and the front and back of your vehicle license (passenger cars require uploading the front and back of the ID card and vehicle license, while trucks additionally need a photo of the owner with the vehicle). 4. Agree to the "ETC Customer Commitment for Releasing License Plate Occupation." 5. Complete facial recognition, and upon successful verification, the issue will be resolved.
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What items are included in a major car maintenance service?

Here are the items included in a major car maintenance service: 1. Change engine oil and three filters. 2. Replace transmission fluid. 3. Replace generator and fan belts. 4. Replace spark plugs. 5. Replace brake fluid. 6. Replace power steering fluid. 7. Replace fuel filter. 8. Tire inspection and replacement. 9. Throttle valve inspection and cleaning. 10. Coolant inspection and replacement. 11. Timing belt inspection and replacement. 12. Chassis inspection. 13. Fuel injector inspection and cleaning. 14. Battery inspection.
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What Materials Are Needed for Temporary License Plate Application

The following materials are required for applying for a temporary license plate: 1. Original and photocopy of the vehicle qualification certificate (for imported vehicles, the import certificate is required). 2. Original and photocopy of the third copy of the compulsory traffic insurance. 3. Original and photocopy of the first copy of the vehicle purchase invoice. 4. Original and photocopy of the owner's identity proof (if applying through an agent, the agent's original ID and photocopy are required). 5. For non-local owners, the original and photocopy of the temporary residence permit are needed. Below is additional information: 1. Process for applying for a temporary license plate: After gathering all required materials, fill out the "Temporary License Plate Application Form" at the traffic management department, then submit the application at the window and receive the temporary license plate. 2. Notes for applying for a temporary license plate: Ordinary temporary license plates cannot be used for driving in other provinces; if driving in another province is required, a 30-day cross-province temporary license plate must be applied for. Temporary license plates can be applied for consecutively, but the number of applications is limited to 3 times.
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Can I change my license plate if I'm not satisfied with it?

After a vehicle is registered, you cannot change the license plate if you are not satisfied with it. Generally, the traffic management department does not allow random changes to license plates. If you really want to change it, you can do so through the following two methods: 1. Transfer of ownership: The simplest and most direct method is to transfer the vehicle within family members, such as between husband ⇋ wife or parents ⇋ children. However, this greatly affects the vehicle's resale value, as each transfer counts as a transaction, turning the car from new to used. 2. Approval process: Apply to the local traffic management department to cancel the vehicle's license plate and wait for approval. After approval, publish a notice declaring the cancellation of the license plate. After the required waiting period, you can apply for a new license plate with all necessary documents. However, this method is not only troublesome but also requires considering the difficulty of reapplying for a license plate (refer to the lottery system in cities like Beijing, Shanghai, and Guangzhou).
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