Exhaust emissions and fuel residues dirty the fuel and intake system, and the particulate filter. A fundamental and far-reaching problem with combustion engines: performance drops, consumption increases and exhaust emissions deteriorate. At Automechanika in Frankfurt, German additive specialist Liqui Moly showcased two versions of Jet Clean Tronic III. The professional version is a 3-in-1 solution and cleans the fuel system, the intake tract including intake valves and the particulate filter. The basic version has an attractively low price.