[Seadog]

Originally Posted by Glider

Interestingly and probably the person most unlikely to give evidence I can. In July three spitfires shot down a He111 using 87 octane fuel. However before the doubters get excited, they were three aircraft attached to an OCU unit who formed an emergency flight in case of an opportunity.

All RAF aircraft were armed in case this happened including OCU units but OCU units didn't have 100 Octane fuel, so there was one combat using 87 octane.

Thanks!