by Steve J » Mon Nov 09, 2015 8:26 pm
Yes, I've got that book as well - the truth of the matter is that the early LDs (i.e. LD125 Mk1), had the tubular steel frame underneath the pressed steel frame loop, which meant that the capacity was the same as the D. Only the later LDs from about 1954 on (Mk2 & Mk3) had the pressed steel frame loop without the tubular steel section over top of the fuel tank. This meant the tank could be made deeper, and hence the greater fuel capacity. By the time the book was published, the majority of the LDs on the road would have been the later type.