Now, just for interest, this is assuming
all Blenheims used 100 octane only (six Blenheim units may have used 100 octane in all tanks)
Blenheim = 479 imp gals
Defiant= 97
Hurricane = 90
Spitfire = 85
Total= 751 imp gals divided by 4 = 187.75
1 ton 100 octane = 315.5 divided by 187.75 = 1.7 fuel loads
20,000 x 1.7 = 34,000 fuel loads
14,000 x 1.7 = 23,800 fuel loads
17,000x1.7 = 28900 fuel loads
Total = 86,700 fuel loads - 57,971 = 28929 fuel loads left over
Even with all Blenheims
theoretically using nothing but 100 octane fuel, there was still more than enough 100 octane fuel
consumed - not issued - from July through end of October to supply 100% of FC, and some BC, operations. Once again this is also assuming
all aircraft landed with empty tanks and had to be completely refueled, rather than being topped up.
But Wait there's More!!
According to Kf (attachment) the only British aircraft to fly during the Battle of Britain were those of Fighter Command and they managed to consume
all of the "other grades" of fuel issued, and
all of the 100 Octane!?
(Kf also says that consumption of "other grades of fuel went down starting mid to late September. Coincidentally that was the time that Operation Sealion was called off, and the collections of invasion barges that Bomber Command was running intensive operations against dispersed.
http://www.military-history.org/arti...n-timeline.htm
Except, according to the graph, Bomber Command wasn't operating.)