Combine flour, rolled oats and salt in mixing bowl.
Slowly drizzle in oil, mixing with a fork until mixture resembles fine crumbs.
Add ice water slowly until mixture begins to form a ball.
Pat into 9 inch pie plate. Bake according to filling recipe.
For baked pastry shell: Prick pastry with fork in several places.
Bake at 400° 10 minutes until light golden brown.