Penrite Enduro 4 ST HD 25W-70 Mineral 4L Enduro HD is a premium, high performance mineral, 25W-70, non-friction modified, 4 stroke engine oil. It contains a superior anti wear package of FULL ZINC (exceeding 1750+ ppm) for ultimate engine, gearbox & clutch protection and a multi-grade viscosity designed to maintain oil pressure and consumption control for older and classic motorcycles.   NOTE: Enduro HD replaces both Enduro and HD motorcycle oils   Viscosity 25W-70 Base oil Mineral Fuel types Diesel, Petrol, Racing Benefits Maintains oil pressure and reduces oil consumption, Full Zinc anti wear additive pack for ultimate engine wear protection APPLICATION Enduro HD is primarily recommended for use in pre-1980 motorcycle engines where SAE 40 & SAE 50 grade engine oils were specified.  It is also equally suitable for use in transmissions with wet clutch systems where engine & gearbox oils are combined. It has optimum clutch slip prevention in these systems.   Enduro HD is ideal for use in pre-Evolution (1984) engined Harley Davidson and larger capacity European motorcycles operating in all service conditions including competition and high ambient temperatures. It may also be used in older large capacity Japanese bikes and in classic British & European motorcycles including single cylinder 350 to 500cc low revving engines as well as 500cc and over parallel twins. It is ideal for classic models of the following makes –   AJS Ariel   BMW    BSA  Buell  Douglas Ducati  Gilera  Harley Davidson Heinkel Indian ISO JAWA Matchless Motobecane Moto-Guzzi Norton NSU Panther Parilla Rabbit Royal Enfield Sunbeam Triumph Vellocette Victoria Vincent and many other makes and models Enduro HD may also be used in many other engines and gearboxes that require SAE 40 or SAE 50 grade engine oils. It can also be used in older worn engines or those burning excessive oil that originally specified SAE 30 or SAE 20W-50 grade engine oils. BENEFITS Maintains oil pressure and reduces oil consumption Full Zinc anti wear additive pack for ultimate engine wear protection Non Friction modified to maintain clutch effectiveness Specially blended for older and classic large single cylinder and V-twin engines Suitable for pre-Evolution Harley Davidson engines Provides easier starting with better operating temperature protection than older mono grade oils INDUSTRY & MANUFACTURER'S PERFORMANCE LEVELS API SG SUITABLE FOR USE WHERE SPECIFICATIONS BELOW ARE REQUIRED API SF