Amounts needed for different size pie crusts:

8 OR 9 INCH - 1 crust pie shell:
1 c. plus 2 tbsp. flour
1/3 c. oil (such as Mazola, Puritan, etc.)
2-3 tbsp. cold water

8 OR 9 INCH - 2 crust pie shell:
1 3/4 c. flour
1/2 c. oil
3-4 tbsp. cold water

10 INCH - 2 crust pie:
2 2/3 c. flour
3/4 c. oil
4-5 tbsp. cold water

Stir oil and water. Add all at once to the flour. Mix and roll out between sheets of wax paper.