In mixing bowl stir together flour & salt. Pour cooking oil & cold milk into measuring cup ( do not stir); add all at once to flour mixture. Stir lightly with fork. Form into 2 balls; flatten slightly with hands. Cut waxed paper into four 12" squares. Place each ball of dough between 2 squares of paper. Roll each ball into a circle to edge of paper. (Dampen work surface with a little water to prevent paper from slipping.) Peel off top paper & fit dough, paper side up, into pie plate. Remove paper. Cut to 1/2" of edge & fold extra pastry over.