Firstly, as a card carrying pedant, Gary is technically correct in stating that as dispensation had been given it cannot have been cheating. Whether dispensation should have been given is an entirely different point and one that I don't feel that I have the knowledge to cast my opinion on.
Just thinking out loud about the post made by Lucifer's Apprentice. 8 litres of fuel per lap would just about (maybe with luck) enable three laps before stopping to fill a 24 litre tank. I know he says the alleged usage is 'over 8 litres' but that begs the question how much over? Would the weight of extra fuel negate the deemed advantage of going further before stopping?
Finally, to agree with Warrior, going three laps before stopping offers no advantage in a four lap race over a 'two and two' lap strategy. In each case there is one standing start lap, one lap coming into the pits, one lap exiting the pits and one flying lap. All that changes is the flying lap is either on lap 2 or lap 4.
"There is nothing so momentary as a sporting achievement, and nothing so lasting as the memory of it."