Perhaps you could explain your question in different terms.
Excessive revving of an engine causes overpressure in the crankcase. It causes unhealthy expansion in the pistons and the valves.
too much fuel, excessive oil consumption
There are several possible causes for the engine codes P0136 and P0141. Some possible causes for P0136 are oxygen sensors, fuel injectors, or intake air leaks. Possible causes for P0141 are the engine control module and the oxygen sensors.
Excessive engine RPM....low oil level.....engine component wear/stess/fatigue ....over heating....
excessive amount of fuel, running too rich.
Excessive engine torque. Also the rubber will deteriorate if its really old or soaked with rubber.
That is one of dozens of possible causes.That is one of dozens of possible causes.
Excessive crankcase pressure will cause this problem two possible causes are worn/broken piston rings or a blocked engine breather.
could be anything. if it's not engine oil, or some kind of engine treatment designed to add to your oil , it's more then likely a form of contamination.
You eating the engine.
That is one of many possible causes.
pressure test the coolant system you will find a blown intake or head gasket