Too much oil in a modern engine can be very bad.
First, if the oil level is too high it will get foamed up by the crankshaft turning. This can also create too much oil vapor in the crankcase which will get drawn into the crankcase ventilation system which will then get drawn into the intake system to be burned in the engine. Unfortunately oil vapor does not burn well in the engine and can end up in the exhaust gases.
Too much oil in the exhaust gases can contaminate the oxygen sensors as well as the catalytic converters possibly permanently damaging them. This would be a very expensive repair bill!
So if you accidently put too much oil in your engine it would be best to remove it as soon as possible.
First, if the oil level is too high it will get foamed up by the crankshaft turning. This can also create too much oil vapor in the crankcase which will get drawn into the crankcase ventilation system which will then get drawn into the intake system to be burned in the engine. Unfortunately oil vapor does not burn well in the engine and can end up in the exhaust gases.
Too much oil in the exhaust gases can contaminate the oxygen sensors as well as the catalytic converters possibly permanently damaging them. This would be a very expensive repair bill!
So if you accidently put too much oil in your engine it would be best to remove it as soon as possible.