Penrite Shocker oil (fork oil) 2, 500mL. RRP $12.99 Use this in Norton Road Holder and Matchless / AJS forks. Where a heavy SAE 20 oil was specified for motorcycle forks, Shock Absorber Oil No.2 may also be used. Can also be used a Machine oil 20W for lathes and shed machinery
See Penrite site for MSDS and specifications. For use on British motorcycles pre 1980.