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How to Maintain a Car That Has Been Unused for a Long Time?

2 Answers

DiAaron

07/30/25 2:57am

Maintenance methods are as follows: 1. External maintenance: Clean the entire car from top to bottom, front to back, inspect it, repair any defects, and perform a waxing beauty treatment. 2. Engine maintenance: Clean the engine, check the engine oil, brake fluid, and antifreeze, top up if insufficient, replace if expired. If water was used instead of antifreeze during summer, it must be replaced with antifreeze now. 3. Tire maintenance: Check the tires for scratches, bulges, and remove any debris from the treads. Increase the tire pressure slightly compared to summer. 4. Battery maintenance: Check the battery casing for bulges or damage, ensure the battery water is sufficient, and the electrode connections are dry and clean. If green oxides are found on the electrodes, rinse them off with boiling water. 5. Air conditioning maintenance: After a busy summer, promptly clean the air conditioning radiator, replace the air filter, and clean the condenser if possible.

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StMadeline

08/16/25 9:19am

Leaving a car unused for a long time can cause problems. Speaking from my own experience, the battery is the most likely to fail. If left unattended, it can be completely drained and ruined within weeks. I recommend starting the engine for about 10 minutes every two weeks to warm up the car, or simply disconnect the negative terminal to prevent power leakage. Tires should not be overlooked either—ensure they are properly inflated to avoid deformation from prolonged pressure. It’s also a good idea to move the car occasionally to shift the tires’ position. The engine oil should be fresh; perform a minor service and replace the oil before parking the car to prevent old oil from corroding the engine. Clean the interior thoroughly and place a few packs of desiccant inside to absorb moisture and prevent mold. Finally, cover the car with a breathable car cover to minimize dust and sun damage. Following these steps, even if the car sits unused for several months, it should start and run smoothly afterward.

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