Penrite Classic Medium – 5 Litre


Penrite Classic Medium is a premium mineral, 25W-70, high zinc, low detergent engine oil designed specifically for petrol and diesel fuelled vehicles manufactured between 1950 and 1989. It features a double layer of engine wear protection with high zinc and increased operating temperature viscosity over older style multigrade oils or where SAE 40 monograde oil was specified by the manufacturer.

Classic Medium is suitable for passenger cars, motorcycles, 4WD’s, light & heavy duty commercial vehicles (trucks, buses & heavy equipment), tractors & industrial machines that originally specified an SAE 40, monograde engine oil and were fitted with an engine oil filter.

Classic Medium is a multi-grade oil that contains a special additive pack that suit vehicles of the era and is compatible with grades that were originally specified. This oil exceeds the specification requirements of original oils required during this period hence offering a greater level of engine protection compared to original oils.

Classic Medium is an API SG/CD grade oil and contains HIGH ZINC levels for added anti-wear protection for older engines. It contains a “Tacky Additive” so that when the vehicles are laid up, the engine oil doesn’t run off the internal surfaces. This combined with an increased level of rust inhibitor, provides protection against corrosion and deterioration when the engine is not used or in storage.

Suitable for use in motorcycles fitted with a wet clutch.

  • Formulated to give much improved low temperature pumpability
  • Improves operating temperature wear protection
  • Extends bearing and gear life by minimising wear and shock loads
  • Minimises sludge build up, bearing corrosion and piston ring sticking
  • Formulated specifically for vehicles manufactured from 1950 – 1989
  • Optimised zinc levels for wear protection
  • 5 Litre


  • API SG


  • API SF

£33.29 £39.95 inc. VAT