What to Do When Engine Oil Runs Out Without Blue Smoke or Oil Leaks?

[LeConnor]

Engine oil running out without blue smoke or oil leaks is due to oil consumption. Here are the common causes of oil consumption: 1. Poor piston ring sealing: Wear of the valve guide and oil seal allows oil to enter the combustion chamber through the intake tract (blue smoke) or enter the exhaust manifold and burn (white smoke). 2. Turbocharger rotor wear: Oil enters the intake tract and burns (blue smoke) or is discharged through the exhaust pipe (white smoke). Poor cylinder sealing leads to excessive crankcase ventilation (cylinder scuffing or piston ring wear), causing oil to be discharged through the crankcase ventilation system or sucked into the intake tract and burned. 3. External leaks: Including front and rear crankshaft oil seals, valve cover gaskets, oil pan gaskets, oil cooler, and other parts.