Specialized cleaner for gentle and quick cleaning of the sensitive element of the mass air flow sensor (MAF) of gasoline and diesel engines. Evaporates quickly and without residue. Pollution of the DMRV sensor leads to failures in the correct assessment of the amount of air entering the engine and a violation of the composition of the combustible mixture. Starting of the engine worsens, stability of idling, power drops, fuel consumption rises. Engine problems can affect the operation of the automatic transmission. In most cases, cleaning the MAF helps avoid costly sensor replacement and restores engine performance to full.