The big-end shells (connecting rod to crankshaft) and crank shaft journal bearings have failed.
Excessive oil use, excessive water use, major oil leak, excessive smoking, ask a certified mechanic
Knocking noise in the engine may be as a result of excessive backlash, misaligned gears and worn timing chain. Blowing of excessive oil pressure could be as a result of stuck regulator.
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.
Excessive crank case blow by caused by worn piston rings
too much fuel, excessive oil consumption
Oil is required to lubricate all the moving parts, without oil these parts would overheat with excessive friction and seize within minutes, the engine would be ruined.
Low oil pressure due to: Defective oil pressure sensor Excessive engine wear (bearings, weak oil pump)
bad piston rings Excessive engine wear - Rings, Valve guides, Valve seals
Yes. The oil will expand as the temperature of the engine increases leading to numerous problems from blowing gaskets to aerating the oil which leads to poor lubrication of the main components. In a nutshell it's can be as bad as underfilling.
Excessive engine wear? bearings Bad oil pump? Oil viscosity too low for age of engine?
Excessive engine wear? Oil pump weak? Incorrect grade of oil?
Excessive internal engine wear (bad rings)