Why should air tanks be drained regularly, especially in cold or humid climates?

Pick an answer

1. Draining tanks only matters in vehicles built before the 1990s, since newer systems are fully sealed
2. To remove accumulated water and oil before they can cause a freeze-up or reduce system performance
3. Draining tanks is done only to reduce vehicle weight
4. It is only necessary once a year regardless of climate

Correct!

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