1. Preheat oven to 450 degrees F.
2. In medium bowl, combine flour, baking powder, baking soda, salt, and sugar.
3. Gently mix buttermilk and oil into dry mix to form a loose dough.
4. On a lightly floured surface, roll or pat dough to 3/4" thickness. Cut with 2" biscuit cutter, dipping cutter into flour between cuts. Transfer biscuits to an ungreased cooking sheet.
5. Bake until golden brown (12-13 minutes).