In medium bowl, combine flour, baking powder, baking soda, salt, and sugar.
In small bowl, stir together buttermilk and all of the oil. Pour over flour mixture and stir until well mixed.
On lightly floured surface, knead dough gently for 10 to 12 strokes. Roll or pat dough to 3/4-inch thickness. Cut with 2-inch biscuit or cookie cutter, dipping cutter in flour between cuts. Transfer biscuits to an ungreased baking sheet.
Bake for 12 minutes or until golden brown. Serve warm.