BIZOL Mass Air Flow Sensor Clean+ c38 is a cleaner particularly developed for sensitive hot-wire and hot-film sensors of mass air flow meters (MAF) in modern gasoline and diesel engines. It eliminates fast, safe and effectively any kind of contaminations on the sensors like soot, dust, oil and others. This restores the calculation of air/fuel ratio to the optimal level and as a result improves start and idle behaviour, maintains optimal engine performance and improves fuel consumption. Evaporates quickly, leaving no residues. Non-aggressive to plastics, though we advise to check compatibility with solvent sensitive plastic parts before using. It is recommended to clean the MAF sensor at every change of air filter and in case of malfunction.