What to Do If Peugeot 408 Burns Engine Oil?
3 Answers
Peugeot 408 burning engine oil can be addressed by replacing it with higher viscosity oil to enhance the sealing between engine pistons and cylinder walls, or by regularly inspecting and replacing related oil components. Below are some preventive measures for engine oil burning: 1. Use high-quality engine oil: Engine oil is prone to corrosion and aging under prolonged high temperatures, leading to thinning of the oil film and making it easier to enter the combustion chamber. Using high-quality engine oil can significantly delay this phenomenon. 2. Pay attention to fuel system cleanliness: Combustion inevitably produces carbon deposits, which are the root cause of various automotive issues, such as aging of valve oil seals and increased clearance between pistons and cylinder walls. These are directly or indirectly related to carbon deposits. Therefore, maintaining a clean fuel system is highly beneficial in preventing engine oil burning.
Last time my Peugeot 408 was burning oil, which really gave me a headache. The oil consumption was fast and there was blue smoke, so I rushed to get it checked. Common causes are worn piston rings or aging valve stem seals leaking oil, causing oil to enter the combustion chamber and burn. First, you need to confirm the issue: check the dipstick regularly—if it’s below the minimum line within weeks, that’s a sign; observe the exhaust pipe—blue smoke or unusual odors mean trouble. Don’t delay in addressing it. Minor issues might just require adding a specialized additive to repair the seals, but severe cases may need a professional shop overhaul to replace piston rings and seals. Certain model years of the 1.6T engine in Peugeot vehicles are known for this problem. After the repair, I used full synthetic oil and gentle driving to prevent recurrence—better safe than sorry. In short, act early to keep the engine healthy.
When my Peugeot 408 was burning oil, I directly consulted a mechanic because oil loss not only costs money but also damages the engine. The causes usually involve stuck piston rings or turbocharger seal leaks. For diagnosis, first measure oil consumption—if it exceeds half a liter per 1,000 kilometers, it's a serious issue; exhaust gas analysis provides more accurate results. Solutions are stepwise: for mild cases, clean carbon deposits or replace the PCV valve; moderate to severe cases require engine disassembly for inspection and part replacement. Repair costs range from several thousand to over ten thousand yuan—remember to check the vehicle warranty, as older Peugeot models may have recalls. Prevention recommends using high-quality oil and regular maintenance, while reducing hard acceleration. Don’t take it lightly—safety first.
