This Liqui-Moly Diesel Particulate Filter Cleaning Fluid - 1 Liter (Mfg#20110) fits Audi A3 8P FWD TDI, BMW B57 3.0L, BMW M57 3.0L, BMW N47 2.0L, BMW N57 3.0L. Reviews; NO Lifetime Replacement. Product Details. Highly effective fluid for cleaning clogged passenger car diesel particulate filters when installed. Dissolves hardened, dense, and TFId.