Bears four diagrams, courtesy of The 'Motor', and much explanatory text re the working cycle of the rotary engine invented in 1954 by German engineer Dr Felix Wankel. Poster: "Castrol guide to the Wankel four-stroke rotary engine"
Marked: 'This chart has been checked by the Ford Motor Co., Dagenham, Essex' Ford Consul Corsair lubrication chart
Bears four diagrams, courtesy of BSA Motor Cycles Ltd, and lengthy list of recommended grades of oils for two-stroke motor cycles, scooters and mopeds. Poster: 'Castrol guide to the two-stroke cycle'
