Mix first four ingredients in a large bowl.
Separate egg yolks from whites. Save both.
In a small bowl, add milk and oil to the egg yolks and stir. Add to dry ingredients and stir until incorporated.
Beat the egg whites until fluffy and stiffish peaks form - 1 minute.
Fold beaten egg whites into the pancake batter gently until just incorporated.
Cook/griddle as you usually do! the batter will be super thick - I used a 1/3 cup measure to scoop it out and pour into the griddle, spreading it out slightly with a fingertip. I made them about 4inches wide, not too big. The batter is noticeably thicker than boxed mixes - it makes really fluffy pancakes, mine were about 1.5cm thick.
Don't be intimidated by beating and folding the whites - it is super quick. I had the whole batter made in about 3 minutes time.