Mary, you are WAY out on this one.

The internal fuel load of a Su-27 Flanker is 9,400kg, on the F-15C it s
5,950kg (or 6,103 depending on source), the F-18 is 4,900kg.

Range without drop tanks is 3,680km for the Su-27, 1,970km for the F-15C &
2,200 for the F-18.

Yeah, I was about to say the same thing.

Su-27 can carry LOTS of fuel.


Ron
Tanker 65, C-54E (DC-4)