Place a skillet over low heat.
In a large bowl whisk together the flour, sugar, baking powder, and salt.
Add the oil, eggs, and buttermilk. Stir together until just combined. The batter will be lumpy, do not overmix.
Spray the skillet with cooking spray and pour 1/4 cup of batter on the skillet and spread it out with the bottom of the measuring cup. As soon as bubbles begin to develop on top, flip the pancake. Be careful, the pancakes will be think and cook quickly. Allow it to cook another 30 seconds or so on the other side and remove to a plate.
Wipe down the skillet, spray with cooking spray and cook the next pancake.