Highly effective cleaning fluid for clearing the engine interior of troublesome deposits. Brings all types of oil-soluble and oil-insoluble residues into suspension and removes these from the oil circuit during the next oil change. Following this, the engine that has been cleared of deposits and contaminants and the fresh oil can then deliver its full performance. Wear in the engine is thus reduced and the service life is extended. For gasoline and diesel engines. Can be safely used in vehicles with toothed belt running in oil. 300 ml sufficient for up to 6 l of oil. Not suitable for use in motorcycles with wet clutches!