[Kurfürst]

Originally Posted by Glider

Whoops the correct manual

http://www.zenoswarbirdvideos.com/Im...pit2Manual.pdf

Thanks. It says July 1940, Spitfire IIA and IIB manual, and

"Fuel: 100 octane (the reduced limitations for use with 87 octane are shown in the brackets)"

Also this, for Spitfire I from same timeframe I believe:

"When using 100 octane.." And above it limiations we know for being for 87 octane.