When we ran the GTR at Tugga in 2008, we were bound to use Elf as thats what that car, and most of the period, were tuned on. We obviously relied on a 3rd party to fill us roadside, and I remember turning to Tim several times during that week and asking if he was enjoying himself, because that fuel top-up just cost us $500.
We used over 600 litres for the event..... at $8.50 per litre. Seems like madness now, but back then, we all used to just accept it.