When the KC-135Q model received the CFM-56 engines, it was redesignated the KC-135T model, which was capable of separating the main body tanks from the wing tanks where the KC-135 draws its engine fuel.
Când modelul KC-135Q s-a modernizat cu motoarele CFM-56, a fost proiectat modelul KC-135T, capabil să separe rezervoarele principale de rezervoarele din aripi de unde KC-135 își trage carburantul.