What are the solutions for a car burning engine oil?
2 Answers
Solutions for cars burning engine oil: 1. If the car burns oil when cold but returns to normal after warming up, this phenomenon is caused by aging valve stem seals. Solution: Remove the engine cylinder head and replace the valve stem seals. 2. If the car burns oil when hot (after reaching normal operating temperature) and blue smoke continues to come from the exhaust pipe, this indicates poor sealing of the piston rings. Solution: Remove the oil pan and replace the piston rings. Here are the functions of engine oil: 1. Alleviates friction and high temperatures. 2. Reduces gas leakage and prevents contamination from external pollutants. 3. Prevents contact between water, air, acidic harmful gases and engine components. 4. Buffers pressure rise at the engine cylinder ports. 5. Flushes away dirt generated on component surfaces.
Last time I drove an old Passat, I also encountered oil burning with very noticeable blue smoke from the exhaust pipe. The repair shop found that it was mainly due to worn piston rings causing oil to enter the combustion chamber. The mechanic said this situation required an engine overhaul or just endure it by adding oil frequently. Replacing the valve stem seals and piston rings cost over 5,000 RMB, but oil consumption dropped from 1 liter per 1,000 km to 0.2 liters. I suggest you first measure your oil consumption—if it exceeds 0.5 liters per 1,000 km, don’t push it. Nowadays, the non-dismantling oil seal replacement technology is quite mature and costs half as much as an overhaul.
