Is a Car Older Than Three Months Considered a Stock Car?

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Is a Car Older Than Three Months Considered a Stock Car? A car older than three months is considered a stock car. Here are some considerations when choosing a stock car: Replace all vehicle fluids: Fluids like engine oil must be replaced, and others such as coolant and lubricants should be checked or replaced as well. Inspect tires and all rubber components: Rubber parts are most prone to aging and deformation. For example, car tires, which bear the weight at the bottom, can deform easily. Short-term parking is not an issue, but for stock cars parked for extended periods, as the rubber ages, the tires may not return to their original shape. Therefore, such tires need to be replaced promptly to ensure driving safety.