It is funny, but cars that use a some oil [perhaps 1 qt
pr 2 000mi] due to the worn valve stem seals are LASTING longer and more reliable, if the owner is aware of oil consumption.
First, the oil lubricates the valve stems which cools them down [provided oil has low ash contenht and burns out with minimum deposits, such as valvoline racing.
Second, adding fresh oil at regular bases keeps it cleaner
Third, frequent underhood checks make another items such as leaking hoses etc hard to miss ,which prevents overheating and engine failure due to the coolant loss.