To understand an engine oil level that keeps rising, compare it under normal, safe conditions: cold versus warm, idle versus steady speed, and light versus higher load. Record the level at the same place and temperature and check whether the oil smells unusual. Change one condition at a time so the result stays useful.
Do not create a risky test just to reproduce it. Avoid topping up until the cause is understood; a rising level can indicate contamination.
Quick educational note
For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.
How to use this information
This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.