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Is It Necessary to Warm Up an Automatic Transmission Car in Place?

1 Answers
DeLeonardo
07/29/25 4:15pm
It is necessary to warm up an automatic transmission car in place for the following reasons: 1. After the car has been parked for a long time, the engine oil inside flows back to the lower oil pan, leaving the upper part in a dry friction state with insufficient lubrication. It takes about 30 seconds after starting for the oil pump to circulate the oil to components such as the pistons, connecting rods, and crankshaft. 2. After prolonged parking, the engine cools down, and it needs time to reach normal operating conditions after starting. 3. Before the engine reaches its normal operating temperature, it cannot effectively vaporize gasoline completely, which can lead to incomplete fuel atomization and combustion, resulting in carbon deposits forming around the throttle valve, cylinder walls, or pistons.
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Is the Tire Ruined After Using Tire Sealant?

Using tire sealant will not ruin the tire, but it may cause some corrosion to the wheel rim and tire. Tire sealant is convenient and quick, eliminating the need to remove or replace the spare tire. Simply inject the sealant into the tire through the valve stem to seal the leak. However, tire sealant can affect the tire's dynamic balance. After using it, avoid driving at high speeds, and vehicles with tire pressure monitoring systems (TPMS) should use it sparingly to prevent damage to the TPMS. Tire sealant cannot repair sidewall damage, as a damaged sidewall indicates that the internal cords have broken, posing a safety hazard. In such cases, the tire should be replaced immediately. Due to its corrosive nature, tire sealant should only be used as an emergency solution. Prolonged use may increase future maintenance costs. If time and conditions permit, proper tire repair methods should be applied promptly.
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What is the best position to install ETC on a vehicle?

ETC is best installed in the upper middle part of the front windshield for small vehicles such as cars and minivans; for large vehicles like trucks and buses, the lower middle part is optimal. The installation height for ETC should be no less than 1.2 meters and no more than 2.5 meters. Before installing ETC, clean the front windshield to ensure the surface is smooth, clean, and dry. Then peel off the adhesive backing of the OBU and attach it to the front windshield, pressing firmly for 2 to 3 minutes to remove any air bubbles. Unauthorized removal or movement of the OBU device, a dead battery in the OBU, or the ETC electronic tag falling off or becoming loose may cause the ETC electronic tag to fail. In such cases, you can take the ETC device to the bank where the ETC card was issued or to a highway service center for testing and reactivation.
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How Many Days in Advance Can a Driver's License Be Renewed?

Driver's license can be renewed 90 days in advance. According to Article 35 of the Regulations on the Application and Use of Motor Vehicle Driver's Licenses, motor vehicle drivers should apply for renewal at the vehicle management office of the driver's license issuing authority within 90 days before the expiration of their driver's license. When applying, they must fill out the motor vehicle driver's license application form and submit the following documents and certificates: 1. The identity proof of the motor vehicle driver; 2. The motor vehicle driver's license; 3. A medical certificate of physical condition issued by a county-level or higher medical institution or a military medical institution at the regimental level or above. According to the provisions of the Administrative Measures for Motor Vehicle Driver's Licenses of the People's Republic of China, if the renewal period is exceeded by more than one year, the vehicle management office shall cancel the motor vehicle driver's license and note it in the registration records.
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What is the equivalent of China IV standard?

China IV is the China 4 emission standard. Here is some relevant information about the China 4 emission standard: 1. This emission standard was implemented in 2010, and almost all vehicles produced after 2010 comply with the China 4 emission standard. 2. The China 4 emission standard is the fourth stage of the national motor vehicle pollutant emission standard. 3. The China 4 standard is based on the Euro 3 and Euro 4 vehicle emission standards. 4. China 1: Nationwide implementation on July 1, 2001; China 2: Nationwide implementation on July 1, 2004; China 3: Nationwide implementation on July 1, 2007; China 4: Nationwide implementation on July 1, 2010; China 5: Nationwide implementation on January 1, 2018; China 6: Implemented in some cities on July 1, 2019, with the latest nationwide implementation on July 1, 2020.
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How to Locate the Fuel Filter in Mercedes-Benz GLA?

The fuel filter is located near the fuel tank at the rear underside of the vehicle, and the model number of the fuel filter is GLA45. Below is relevant information about Mercedes-Benz fuel filters: 1. The filter element of the fuel filter mostly uses filter paper, and some fuel filters use nylon cloth or polymer materials. The main function is to filter out impurities in the gasoline. 2. The role of the fuel filter is to remove water and impurities from the gasoline. Below is relevant information about replacing the filter: 1. First, remove the vehicle key and disconnect the fuel pump fuse or the vehicle power supply to prevent the fuel pump from pumping out gasoline during disassembly. 2. Next, remove the rear seat cushion and the cover on the fuel pump, at which point you can see the fuel pump assembly. 3. The fuel pump assembly is secured by a black retaining ring. After disconnecting the wiring harness and fuel lines on the fuel pump, a special tool is required to remove this retaining ring. 4. After removing the retaining ring, the fuel pump assembly can be taken out. Replace the corresponding components of the old fuel filter with the new fuel filter assembly.
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How to Determine Brake Fluid?

Brake fluid can be seen on the exterior of the reservoir, which has markings. If the brake fluid is depleted, the brake warning light on the dashboard will illuminate. Here is relevant information about brake fluid: Methods for selecting brake fluid: 1. First, since the seals in the braking system are rubber components, prolonged immersion in brake fluid can cause chemical changes. 2. Second is the high-temperature performance, which refers to the brake fluid's ability to resist vapor lock at high temperatures. This is evaluated using the "equilibrium reflux point" metric. 3. Third is the low-temperature performance of the brake fluid, which refers to its flow characteristics at low temperatures. This is assessed by measuring the kinematic viscosity of the brake fluid at 40°C. If the viscosity is too high at this temperature, it can affect the transmission of braking force. 4. Fourth, since many components in the automotive braking system are made of metal, high-quality brake fluid should contain various anti-corrosion additives to prevent corrosion of the braking system.
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