Does the Peugeot 408 1.6T Burn Engine Oil?

[AnnieAnn]

Cases of the Peugeot 408 1.6T burning engine oil are relatively rare. The reasons that can cause a car to burn engine oil are as follows: 1. Poor fuel quality: The primary reason for engine oil burning is poor fuel quality. If the fuel cannot be fully combusted, it will form a large amount of carbon deposits. Over time, these deposits accumulate and thicken, with some entering the pistons, causing piston ring sticking and clogging the oil return holes. This creates gaps in the engine, allowing air to enter the combustion chamber and participate in combustion, leading to the phenomenon of burning engine oil. 2. Traffic congestion causing incomplete fuel combustion: Due to traffic congestion, fuel cannot be burned efficiently, generating large amounts of carbon deposits. These deposits clog the oil return holes, preventing the oil scraper rings from removing oil from the cylinder walls. The oil then remains in the combustion chamber and burns, causing the engine oil burning phenomenon. 3. Aging valve stem seals: Aging valve stem seals can also lead to burning engine oil. Valve stem seals are made of heat- and oil-resistant rubber. These seals are exposed to high temperatures, gasoline, and engine oil, along with temperature fluctuations between hot and cold conditions. Over time, the plasticizers in the seals deplete, causing them to shrink and allowing engine oil to enter the combustion chamber, resulting in burning engine oil. 4. Substandard engine oil quality: Poor-quality engine oil is another reason for burning oil. If the oil does not meet standards, its lubricating effect weakens. Combined with carbon buildup, the oil loses its lubricating properties, making it easier to wear down the cylinder walls. This wear increases engine temperature, quickly leading to cylinder scoring or even engine failure.

[LaJayla]

That Peugeot 408 equipped with the 1.6T engine, which I drove for several years, did have some oil consumption issues. This problem is quite common, especially in high-mileage vehicles or certain model years, like those from 2014 to 2017, due to a design flaw in the piston rings that allows oil to seep into the combustion chamber and burn. During normal driving, you'll notice the oil level drops quickly, requiring a top-up every month, and blue smoke coming from the exhaust pipe. It's not just me—many owners on forums have complained about it. Proper maintenance can help mitigate the issue, but it's costly and frustrating in the long run. Newer models might fare better, but once you hit over 60,000 kilometers, you need to keep a close eye on it. I recommend having the technician check the oil level and engine seals during every service to prevent the problem from worsening. Oil consumption affects engine longevity and could lead to major repairs. It's best to use genuine OEM oil or higher viscosity options to try and improve the situation.

[OTeagan]

As a mechanic, I've handled quite a few cases of the Peugeot 408 1.6T, and oil burning is quite common. The main reason is the rapid wear or poor sealing of the piston rings in that THP engine, causing oil to leak into the cylinders and get burned. Common symptoms include rough idling, the oil warning light coming on, and a noticeable drop in oil level when checking the dipstick. The solution isn't too complicated—minor cases can be fixed by cleaning carbon deposits or replacing seals, but severe cases require engine disassembly to replace the piston rings, costing several thousand dollars. Most cases I've encountered are vehicles with over 80,000 kilometers, with fewer issues in new cars, but preventive maintenance is still necessary, such as changing to full synthetic oil every 5,000 kilometers and avoiding short-distance driving habits. Don't ignore small issues; oil burning increases pollution and damages the engine, so timely repairs can prevent greater losses.

[VonGabriela]

Does the Peugeot 408's 1.6T engine burn oil? Yes, many car owners report this issue. I drove a friend's 2015 model, which required frequent oil top-ups after just 60,000 km, along with higher fuel consumption. Investigations reveal it's an engine design flaw - faulty piston rings or PCV systems causing excessive oil consumption. This is quite troublesome, ranging from extra oil expenses to severe engine overheating or cylinder scoring. Older models are more affected, though newer versions show improvement. Used car buyers should inspect carefully. Simple solutions include regular maintenance with manufacturer-recommended oil, avoiding aggressive driving to reduce engine stress. Oil burning not only affects performance but may trigger warning lights - best to visit a specialized repair shop promptly.