I always threw the oil cap: a colleague explained to me what he was really doing.

Avoiding oil splashes and waste
You have certainly already poured oil into a frying pan or on the food to be cooked, when suddenly, accidentally, you have pressed too vigorously over the bottle, pouring too much oil in the way. Result? You end up with splashes everywhere, on your clothes and on the hotplate in particular.

In this case, it will be sufficient simply to remove the ring and then put it back on the side, to prevent any risk of waste or splashes. In this way, you will save money and avoid this type of accident.