What facts would those be?

Do you really need someone to explain to you what you have been claiming for several pages? Your story keeps changing so much that not even you can keep track of what you have been claiming...

You should go back and re-read the thread without your emotional involvement.

It is a fact that in July of 1940, 87 Octane fuel was Fighter Commands standard fuel. They were definitely in the process of adopting 100 Octane and had begun operating aircraft that could only use 100 Octane like the Spitfire Mk II.

The Operating Notes are the primary source for flying the aircraft.

Notes on the Merlin Engine are by the Air Ministry, RAF, and convention a legal document that defines the airworthy limitations of the aircraft.

The Operating Notes are equivalent to a Flight Information Manual and will reflect the airworthy limitations of the type certificate.

That is how it works. It is that simple and elegant. The hatred of me for pointing that out is irrational and immature. Maybe some of you should consider getting out and socializing more?

Bottom line, there is no need to construct great leaps of logic built around circumstantial evidence. Especially when that evidence is misinterpreted such as using Estabilishments as proof of quantity on hand.

That's a claim, not a fact. For dozens of pages now several posters have been asking for proof, which you so far have not provided.

It is a fact, JtD. 100 Octane does not have a specification yet on the logistical documents posted but 87 Octane is a specified fuel.

Doesn't matter for practical purposes, and red herrings are of no interest to me.

All you have to do is show us proof that RAF FC flew at least one, operational squadron, Hurricane/Spitfire 87 octane combat sortie. Just one...

You have presented your thesis and now we want proof.

http://forum.1cpublishing.eu/attachm...1&d=1335884379
AP 1590B Vol. I, A.L. 4

This is the specification of 100 octane fuel in November 1940. I've never seen this anywhere else, everywhere else (even in the same manual) it's simply called 100 octane fuel.

A fact would be RAF FC used 'X' ton of 100 fuel and 'Y' ton of 87 fuel with 'Y' being much much greater than 'X'.

Which documents would these be?

Provisional specification.....

And in May of 1940, it still had no specification and the estabilishment was still being discussed.

The case is not very strong for it being the main fuel of Fighter Command for much of the Battle of Britain.