What are the solutions for oil burning in the 2015 Passat?
2 Answers
1. Engine oil selection: Engine oil is crucial for a vehicle's engine, as it not only lubricates but also cleans, cools, prevents rust, and seals. If the vehicle experiences minor oil burning, using high-quality engine oil can effectively alleviate the issue. Poor-quality oil or oil with an incorrect viscosity grade can accelerate wear. Additionally, oil that is too thin or too thick can lead to poor engine lubrication, increasing wear on piston rings and cylinder walls and reducing sealing performance, which results in oil burning. Choosing high-quality oil enhances lubrication and reduces engine wear during operation, effectively mitigating oil burning. 2. Oil filter selection: It is essential to choose a high-quality oil filter (oil element), as its primary function is to remove impurities such as dust, metal particles, carbon deposits, and soot from the oil, protecting the engine. If the filter is of poor quality or becomes clogged, impurities can repeatedly cause engine wear during operation, leading to increased oil consumption. A good oil filter helps clean the engine interior, improves fuel efficiency, reduces emissions, and lowers the engine's exhaust temperature, thereby reducing oil consumption and oil burning issues.
My 2015 Passat used to have quite a headache with oil burning. Tried several methods: the most effective was replacing the upgraded crankcase ventilation (PCV) valve, which is the root cause of this common VW issue. If that doesn’t work, you’ll need to check the piston rings—I’ve heard the third-gen EA888 engine has flawed piston ring design, and upgrading to reinforced ones costs around 2,000–3,000 RMB. For regular maintenance, use high-viscosity full-synthetic oil like 0W-40 or 5W-40, and check the dipstick every 1,000 km. Always keep a small bottle of oil in the trunk for emergencies. If the burning gets severe, a full engine overhaul might be necessary.
