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Is There a Problem If a Car Is Left Unused for Half a Month?

1 Answers

LaOmar

07/29/25 11:41am

It is generally fine to leave a car unused for half a month. However, if the car is left unused for an extended period, it is advisable to start the engine for about half an hour regularly. This ensures that the battery does not drain and prevents rust inside the engine and oil deterioration. Here are some recommendations for long-term vehicle storage: 1. Before storing the car, clean both the exterior and interior thoroughly. Applying wax or a protective coating can help prevent paint corrosion. If possible, store the car in a garage. If parking outdoors, at least cover the car with a car cover to protect it from sun, rain, and debris like fallen leaves that can damage the paint. 2. For vehicles parked for a long time, avoid engaging the handbrake tightly. The brake system, when left unused for extended periods, can react with moisture and oxygen in the air, leading to rust on the brake discs and pads. This can cause them to stick together, impairing braking performance and potentially causing wheel lock-up upon restart. 3. To prevent tire deformation, inflate the tires to a slightly higher pressure than usual, around 2.8 bar. Additionally, park the car on a flat surface to minimize tire damage. Parking on uneven surfaces for long periods can lead to tire deformation. 4. Even when not in use, a car battery discharges over time. A good-quality battery may discharge completely in about three months, while lower-quality batteries may discharge even faster. To avoid complete discharge and battery failure, start the engine every one to two weeks. This also helps prevent internal engine rust. 5. For vehicles unused for long periods, engine oil, brake fluid, coolant, and battery electrolyte can oxidize and deteriorate. It is recommended to start the car periodically and, ideally, take it for a short drive to allow the engine to reach normal operating temperature. Before using the car again, replace the engine oil and other fluids and perform appropriate maintenance.

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