I would imagine that the A4 burnt about the same as the SHAR (I am sure that someone on here will know) but they had the advantage of a C-130 tanker either inbound or homeward bound - or both. The Daggers/Mirages didn’t have probes and their burn would increase 10-fold if they went into burner.
We normally aimed to RTB with 800lbs of gas, with up to 300 being unusable depending on attitude (aircraft not personal!). This gave around 10 minutes of “safe” endurance in case of problems. Diversion was not an option, except to the other carrier, until later in the conflict when the 650’ strip became available at Port San Carlos.
As far as I know, no Argentine aircraft ran out of fuel but I do know that at least one was towed back by the C-130, with fuel being pumped in the front at the same speed that it was pouring out of the holes! More of that later….
Mog