To make dough: Whisk 2 1/2 cups of the flour, yeast, salt and sugar in a large bowl. Combine oil and water in a small saucepan; heat until hot to the touch, 120-130 degrees F. With a wooden spoon, gradually stir the hot water and oil into the dry ingredients. Beat until well mixed. Gradually, add enough of the remaining flour to make a firm, soft dough. Turn the dough out onto a lightly floured surface and knead for 8 to 10 minutes, or until smooth and elastic. Cover with plastic wrap and let rest for 10 minutes.