Why are ballpoint pens preferred for writing outdoors in fluctuating temperatures?

Answer

Oil-based ink is less affected by cold than water-based inks, which can sometimes thicken or skip.

Ballpoint pens are more reliable in cold conditions because their oil-based ink resists thickening or skipping better than the more temperature-sensitive water-based formulations found in rollerballs or fountain pens.

Why are ballpoint pens preferred for writing outdoors in fluctuating temperatures?

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