Liqui moly 1018 motor protect 500ml liqui moly 1018 p this motor protect 500ml from liqui moly is a synthetic engine oil additive for petrol and diesel engines reducing friction and wear the high pressure anti wear additive forms a thin layer on friction pairs inside the engine the layer has ductile and lubricating properties and is effective for at least 50 000km p p adding the product to special low friction fully synthetic energy conserving oils reduces wear by approximately 35 o