Recommendations: highly effective cleaning concentrate with lubricating components for the efficient cleaning of all motorcycle engines (with and without catalytic converter). In general, RAVENOL Motobike Engine Cleaner Shotcan be used in all motorcycles to clean the oil circuit to remove dirt, resin, residues, coking and sludge deposits. Cleaning-intensive surfactants effectively remove these contaminants when draining off the used oil, thus neutralizing harmful motor acids.