What is the reason for the Elantra burning oil without emitting smoke?

[VonWalker]

Elantra burning oil without emitting smoke is due to the low oil consumption. Modern cars are equipped with three-way catalytic converters that can filter out some exhaust gases. Only when the oil consumption is relatively high will blue smoke appear. Introduction to oil burning: "Oil burning" refers to the engine oil entering the combustion chamber of the engine and participating in combustion along with the air-fuel mixture. The phenomenon of "oil burning" in a vehicle can cause the oxygen sensor to fail prematurely, leading to increased carbon deposits in the combustion chamber, unstable idle, weak acceleration, increased fuel consumption, and excessive exhaust emissions. It can also result in insufficient engine lubrication, causing difficult-to-repair damage or even engine failure, significantly increasing maintenance costs and creating potential safety hazards. Factors affecting oil burning: Factors that affect oil burning include fuel quality, driving conditions, driving habits, maintenance habits, etc. These can all exacerbate oil consumption and lead to oil burning, causing carbon deposits in the combustion chamber, sticking of the piston rings, and poor sealing.