My interest in the question really has nothing to do with performance data.

It should be pretty simple to determine from a historical standpoint whether or not the RAF was putting 100 octane into the fighters. I don't see why this would be a debate that gets people angry.

Whether or not the planes in CloD are performing properly has nothing to do with this. No where in the game does it say they're using 87. No where does it say they're using 100 (as far as I know, anyway).

If the planes are flying below what they should, and supposedly ALL the planes are with the possible exception of maybe the Spitfire IIa, then they should ALL be fixed.

Anyway. I just think it's pretty cut and dry that, YES, they were putting 100 octane fuel in these fighters. Especially because I'm hearing this from first sources (actual pilots and ground crew) in these Battle of Britain radio documentaries I'm listening to which were made years ago when these guys were still alive and had better memories of it.

Wolverine,

The Battle of Britain radio documentaries that you mention sound very interesting. Can you tell us more, for example are the recordings available to purchase on-line or at a musium?

I linked to one of them in my first post in this thread, specifically to the one that includes a pilot saying his squadron mate was shot down and collected by a fuel tanker carrying 100 octane fuel.