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When should you check a combustion-engine car’s engine air filter?

Correct answer

According to the manufacturer and operating conditions, especially dust.

Follow the manufacturer’s schedule and actual operating conditions. Dirt roads or dusty environments may require additional checks; summer alone is not the criterion. Do not wait for engine failure or apply one universal annual interval to all models. Use the specified element and procedure: inspection, cleaning and replacement are not interchangeable for every filter.

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  • According to the manufacturer and operating conditions, especially dust.

  • Only when the engine fails.

  • Exactly once a year for every model and operating condition.

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