Penrite Transoil 90, 1L, API GL-1. RRP $10.99 Designed for veteran, vintage, classic gearboxes. Recommended for AJS, Matchless pre 1970; BSA singles; Douglas; Harley Davidson SV; Jawa, Norton; Velocette; Vincent. Penrite Transoil 90 does not contain friction modifiers so suitable for wet clutches; No EP additives so this is compatible with traditional metal parts and bushes. This oil is compatible with leather and Synthetic rubber seals. See Penrite site for MSDS and specifications.