Now, to France 7 May 1940: the RAF stored 660,056 gallons, 2111 tons of 100 octane versus 561,076 gallons, 1,778 tons, of 87 Octane in France: this was
before the balloon went up, 4 Hurricane squadrons listed plus 9 Blenheim, all operating with 100 Octane:
and was requesting extra fuel for Blenheims, 188 gallons each for the outer tanks, plus 280 gallons of 87 Octane for the inner tanks.
And here the projected requirement for 100 Octane was far greater than that for 87: 1,579,740 gallons, 5,007 tons V 950,000 gallons or 3,011 tons.
If the RAF was only interested in building up stocks of 100 octane fuel before releasing it for use why would 100 octane fuel be sent to France to support the squadrons of the BEF? I presume your assumption is that the 4 Hurricane squadrons and 9 Blenheim squadrons were to be used for "operational trials?"
On 7 May more 100 Octane was stocked in France than 87 Octane, and projected requirements for 100 Octane were also far greater - this for a fuel you say was only used in "operational trials".
The requirement to supply 9 Blenheim squadrons - note on the second to last page the stipulation "
ALL reinforcing Blenheim units require aviation fuel, per aircraft as follows: (i) 100 octane. 188 gallons (ii) D.T.D 230. 280 gallons - with 100 octane contradicts the pre-war paper which stipulates that only 16 fighter squadrons and a couple of Blenheim squadrons were to use 100 octane fuel before September 1940.