1 Crankcase breather blocked 2 Worn/ broken piston rings 3 worn cylinder bores 4 Worn valve stem oil seals 5 Worn valve guides 6 Engine is overfilled with oil.
too much fuel, excessive oil consumption
Excessive wear, or lack of oil. Or both. Generally lack of oil is what causes the excessive wear.
Friction
A reaction is not possible.
Low oil pressure can be caused by a number of problems, including inaccurate gauge or sending unit; thin oil due to poor oil quality; excessive oil pressure; broken oil pressure relief spring; oil inlet tube restriction or leak; or excessive oil pump or camshaft clearance.
The typical causes are worn piston rings or valve guides.
bad oil ring,time to freshen up the eng
Adding too much oil will cause your engine to burn off the excessive oil which causes a lot of carbon buildup in your engine and a lot of blue smoke out your tailpipe. If the oil level is high enough, it can contact the crankshaft and foam up. If the oil foams it can damage the engine.
bad piston rings Excessive engine wear - Rings, Valve guides, Valve seals
worn piston rings
Too much oil, excessive crankcase pressure ( bad piston rings ) or both. pressure causes oil to come the filter tude and capilarity is also a factor. pressure causes oil to come the filter tude and capilarity is also a factor.
Worn piston rings allows the oil that is used to lubricate the cylinder walls to enter the combustion chamber.