Reasons for the blockage of the particulate filter in the Audi Q3

[McJoanna]

Audi Q3 particulate filter blockage reasons: 1. GPF cannot control the engine's own emissions: The GPF cannot control the engine's own emissions; it only performs "purification PLUS" at the final stage of exhaust treatment to prevent pollutants from entering the atmosphere. Over time, particles continuously adhere to the filter material, causing the GPF to become increasingly blocked, which is a normal phenomenon. 2. Use of high-ash oil: If high-ash oil is used, it can lead to particulate filter blockage. High-ash oil that hasn't undergone low-sulfur and low-phosphorus treatment will produce more ash, blocking your GPF. Therefore, it is necessary to use low-ash oil with a C-grade certification.