What causes smoke to come from dipstick?

Smoke coming from a dipstick often indicates that oil is burning in the engine, which can result from several issues, such as worn piston rings, leaking valve seals, or excessive blow-by gases. This can lead to increased pressure in the crankcase, causing oil to escape and vaporize. Additionally, overheating or contaminated oil may contribute to the problem. It's crucial to address this issue promptly to prevent further engine damage.