Are different fuel "types" modelled in the COD?

as we know, in the spring and summer of 1940, RAF fighters benefited from increased availability of 100 octane fuel, which allowed their Merlin engines to generate significantly more power through the use of an emergency boost override....would be cool as option under fuel types....or maybe they modelled engine power of RAF fighters with 100 octane fuel (in mind) as default and unchangeable option? Im just curious...