It is best to change motor oil when the engine is cold and the oil has had time to drain from all internal parts.

Question

Quizplus · Accepted Answer

It is actually best to change motor oil when the engine is warm because warm oil flows more easily, allowing for a more complete and effective oil change. However, it is important to let the engine cool down for a few minutes before changing the oil to avoid burning yourself on hot components.

It Is Best to Change Motor Oil When the Engine