You might be losing oil due to the breakage of this but that oil level will decrease when the engine is in operation, the ideal would be that the oil level is always to the maximum, but try not to superior to it, remember that the oil is in constant circulation, also check that the oil pump is in perfect conditions (check it with a pressure gauge and go connected in replacement of the oil pressure bulb this must mark at least 1 kl/cm2 6 kl/cm2 Depending on the engine, this is with a engine at normal working temperature and both in idle and in high RPM, that measurement must vary by RPM) since the slightest cover of one of the ducts can greatly influence the operation of the engine since it is the only thing that lubricates the engine.
If you do not have oil leaks, the pump is in perfect condition and the pressure is adequate verifies that the bulb connection is well connected or the bulb changes.
The other is notice that there is no blue smoke due to the exhaust (if so, you have failures in one of these three -Oil Reserts -Piston Annles -Rallast of the cylinder) since the oil is filtering inside the cylinders (that can be
discard