bad oil ring,time to freshen up the eng
yes used car oil can burn
too much fuel, excessive oil consumption
Friction
piston rings going bad oil leaking around to top of piston so when you start the oil will burn white
an oil pan leak is adding oil to the already polluted environment, causes you to drive with your car a bit low on oil at times, and causes unsightly stains under the car .aside from all this if you monitor the oil level and keep it where it should be , not much of anything else ,i can think of,
The engine Burn out
The typical causes are worn piston rings or valve guides.
Not Efficiently. Milk does contain hydrocarbons so it will burn but oil has a much better energy density.
3.3liters, 15W40 mineral oil factory recomended, 5W30 for better performance if your car doesnt burn or leak oil.
it will burn into pieces
No
Yes, in the combustion chamber.