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Does the Radiator Need Cleaning?

1 Answers
VonCaleb
07/29/25 5:20pm
The radiator needs cleaning. If left uncleaned for a long time, it can easily develop rust and scale, which significantly reduces the cooling system's heat dissipation efficiency and may cause the radiator to boil over. In severe cases, it can damage the engine. Cleaning steps: 1. Ensure the engine is cooled down and turned off; 2. Remove the radiator cap, making sure the engine is cool; 3. Open the drain plug at the bottom of the radiator to let the coolant flow into a bucket; 4. Close the drain plug and fill the radiator with water; 5. Start the engine, turn on the heater control system, add cooling system cleaner, and let the engine idle for 30 minutes; 6. Turn off the engine, let it cool for 5 minutes, then drain the liquid from the radiator; 7. Close the drain plug, fill the radiator with water, let the engine idle for 5 minutes, and then refill with the appropriate compound.
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What does O/D mean in an automatic transmission?

The O/D switch (overdrive) on the gearshift refers to overdrive transmission, which is commonly found in non-manual-automatic transmissions. Here is an introduction to the O/D button: 1. Automatic transmission O/D: O/D is the abbreviation for OVERDRIVE, meaning overdrive transmission, typically used in non-manual-automatic transmission models, especially common in Japanese cars. This button is generally not used in daily driving. Taking a 4-speed automatic transmission as an example, when the transmission gear ratio is less than 1 during operation, this gear is called OVERDRIVE. For instance, when the 4th gear ratio is 0.697, it means the engine turns one revolution while the transmission turns only 0.697 revolutions. This allows the engine to increase the car's speed without requiring high RPMs, thereby improving fuel economy and reducing wear on internal engine components, extending the engine's lifespan. 2. Location and function: Typically, this button is designed on the side of the gearshift lever, while some models place it on the center console. When driving at high speeds or needing to overtake, activating the O/D gear can reduce engine load, eliminating the need for high RPM operation and lowering fuel consumption. In congested traffic, pressing the O/D button prevents the transmission from shifting to the 4th gear and reduces unnecessary switching of the shift solenoid valve.
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How Long After Turning Off the Engine Can You Open the Coolant Cap?

After turning off the engine, wait for about 20 minutes, then touch the radiator hose. If it doesn't feel hot, you can safely open the coolant cap. Coolant Replacement Cycle: For vehicles that run for extended periods, such as taxis, high-quality coolant should generally be replaced once a year. For vehicles with shorter running times, replacement can be done every two years or every 30,000 kilometers. To prevent excessive foaming, which reduces the heat exchange efficiency between the coolant and engine components, ensure the product is within its validity period when adding it. Long-life coolants can have a validity period of up to three years. If suspended particles, sediment, or signs of deterioration or discoloration are found in the coolant, replace it promptly and clean the system. Coolant Composition: The main components of coolant are: 50% purified water, 40% methanol, and 10% other substances. Choosing Coolant: The basic indicators for coolant are its freezing and boiling points. Available in the market are coolants with freezing points of -15°C, -25°C, -30°C, -40°C, etc. It's advisable to choose a coolant with a freezing point at least 10°C lower than the lowest temperature in your region.
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How to Perform a Right-Angle Turn in Subject 2?

Method for performing a right-angle turn in Subject 2: 1. Adjust the position of the right rearview mirror, lowering it as much as possible to see the right rear tire when leaning to the side. 2. Slow down as much as possible when entering the right-angle turn, using the left wiper as a pivot point and keeping close to the left line of the turn. 3. After the front of the car passes the horizontal line before the right-angle turn, observe the inner line of the turn, turn the steering wheel fully to the right, and proceed slowly to complete the right-angle turn. The specific steps for a right-angle turn are as follows: 1. Park the vehicle at the starting position for the right-angle turn. After hearing the voice prompt, shift into first gear, release the handbrake, slowly lift the clutch, and maintain a semi-clutch state to start moving at a steady speed. 2. Drive the vehicle appropriately close to the left edge of the road, maintaining a distance of about 20-30 cm, which is generally the best range. Adjust this distance from the start and avoid making corrections when approaching the right-angle turn. 3. Once the distance is adjusted, focus on the right door window glass. When the A-pillar aligns with the horizontal line of the inner corner of the right-angle turn or when the front hood of the car just covers the yellow line ahead, turn the steering wheel fully to the right. 4. After completing the turn and feeling that the car is about to straighten, slowly return the steering wheel to the center, then turn it back to the left to keep the body parallel to the lane edge line. Turn off the turn signal and exit the test area.
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What Causes an Automatic Transmission Car to Stall Suddenly at a Red Light?

For automatic transmission cars stalling at red lights, the primary reason is usually insufficient driving proficiency. Another possibility could be issues with the car's engine or fuel system, in which case it's necessary to visit a repair shop to inspect the fuel lines and engine. If it's an older automatic transmission model, stalling might be caused by using substandard fuel, leading to carbon buildup in the engine. In such cases, it's essential to switch to gasoline that matches the vehicle's specifications. Correct Method to Start an Automatic Transmission Car: The proper steps to start an automatic transmission car are: insert the key and turn it to the ON position, press the brake, shift to N (Neutral), start the ignition, then shift to D (Drive), release the parking brake, lift the foot brake, and begin driving. This starting method avoids the brief reverse impact on the transmission when shifting from P (Park) through R (Reverse) after ignition. For push-button start models, first press the button to power the vehicle, follow the same steps—press the brake, shift to N (Neutral), press the start button, then shift gears, release the parking brake, and lift the foot brake to start driving. Warm up the car before driving. After starting the vehicle, it takes some time for the oil to fully lubricate all engine components from the oil pan. Driving immediately can accelerate engine wear. Therefore, it's advisable to warm up the car briefly before driving each time. The idling time doesn't need to be too long—just wait until the tachometer stabilizes (drops below 1000 RPM) before driving off.
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How to reset the tire pressure monitoring light on Baojun?

Use the buttons on the steering wheel to navigate to the "Maintenance" option on the instrument panel. When prompted whether the tire pressure is normal, click "Yes". The reset is successful. If the vehicle does not support manual operation, ensure the tire pressure is normal and have a technician use a specialized decoder to clear the fault code.
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How to deal with engine oil burning in a 2012 Magotan?

Timely replacement of the valve stem seals is necessary to ensure the sealing performance of the valves. Directly replace the car's piston rings. Of course, it is still necessary to regularly clean the carbon deposits on the piston rings. Prepare a medical syringe and connect it with a plastic tube used for intravenous drips. Simply insert the plastic tube to extract the excess engine oil.
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