The products of the RENOLIN ZAF DT Series are special zinc- and ash-free hydraulic oils which fulfill Mercedes-Benz specification 6721. They provide powerful detergent/dispersant properties, very good wear protection especially in boundary friction conditions (Brugger: 50 N/mm²). HLPD hydraulic oils according to DIN 51524-2: HLP (except: detergent/dispersant properties), ISO 11158-HV.