Is Engine Oil Consumption High During Long-Distance Driving?

[LeWeston]

Generally, driving on highways with stable conditions doesn't lead to significant engine oil consumption. However, turbocharged engines typically consume some oil, which is considered normal. Excessive oil consumption can be attributed to the following reasons: 1. Piston ring wear or damage, misaligned or incorrectly installed piston rings: Worn piston rings lose their elasticity, reducing the pressure on the cylinder walls and diminishing their oil-scraping effectiveness. 2. Excessive clearance between the piston and cylinder wall: When the fit between the piston and cylinder wall becomes too loose, or the cylinder wears into a conical or oval shape, the piston rings, piston, and cylinder wall cannot seal properly. This allows splashed oil to enter the combustion chamber through the gaps and burn, leading to a sharp increase in lubricating oil consumption.