What is the solution for the Buick LaCrosse burning engine oil?
2 Answers
Check if the exhaust pipe is still unobstructed. If it is not, clean or replace it in time. After driving for a while, check whether the engine oil is insufficient and whether the exhaust pipe emits blue smoke. Measure the cylinder pressure. If the cylinder pressure is normal, the burning of engine oil is caused by the aging and damage of the valve oil seal, and the valve oil seal should be replaced. Extended information: If the cylinder pressure of a single cylinder, multiple cylinders, or all cylinders is lower than the normal value, it is necessary to remove the cylinder head to check whether the cylinder gasket is leaking oil, the degree of cylinder bore wear, the degree of piston wear, and the elasticity of the piston rings. If it is only leaking oil, replace the cylinder gasket. If the cylinder bore and piston are excessively worn, it is recommended to overhaul and replace all cylinder liners, pistons, and piston rings.
I've been driving a Buick LaCrosse for over a decade, and oil burning is quite a common issue, especially in older models. The most frequent cause is worn piston rings, which allow oil to seep into the combustion chamber and burn. Other causes include leaking valve guide seals or a clogged PCV valve. You can monitor oil consumption yourself by checking the dipstick weekly. If you're losing more than half a liter per 1,000 kilometers, it's time to take action. Try using a cleaning additive sprayed into the intake to help reduce carbon buildup on the piston rings. If that doesn't work, visit a professional repair shop—they might need to disassemble the engine to replace the piston rings or adjust the valves. The key is to develop good habits: change to synthetic oil every 5,000 kilometers, avoid frequent short trips with cold starts, and refrain from hard acceleration, as these practices reduce engine wear. Ignoring oil burning can shorten engine life—like my neighbor’s car, which started emitting blue smoke and ended up needing a costly overhaul.
