What are the oil requirements for engines with GPF?
2 Answers
For GPF engines, it is essential to use BMW's latest certified BMW LL-17 oil, which is low in sulfur, phosphorus, and ash content. Reasons for using low-ash oil: During engine operation, additives and other impurities in the oil can burn at high temperatures, producing ash. Previously, when environmental requirements were less stringent, these were simply emitted. Meaning of GPF: A GPF engine is one equipped with a particulate filter in the exhaust system. This component is installed behind the three-way catalytic converter. To verify its presence, when the vehicle is lifted, if you notice a large bulge-like structure after the catalytic converter, that is the GPF.
I drove a car with GPF for a few years and initially didn't understand the oil requirements, so I used regular high-ash oil. As a result, the GPF clogged up quickly, and the repair cost was ridiculously expensive. The 4S technician told me that the GPF captures particulate matter, and if the oil has high ash content, the accumulated ash will clog it, affecting engine performance and even triggering the fault light. Now I only use low-ash oil, specifically ACEA C3 or similar standard synthetic oil, and change it every 5,000 km on time. The GPF hasn't had any issues since. When choosing oil, check the labels on the packaging and opt for certified products to avoid wasting money and time like I did. Also, don't ignore the oil change interval—it helps extend the GPF's lifespan.