1 (18.25 ounce) package white cake mix
¾ cup vegetable oil
1 cup lemon-lime flavored carbonated beverage
2 (3 ounce) packages instant pistachio pudding mix
2 (1.3 ounce) envelopes whipped topping mix
1 ½ cups milk
Beat cake mix, oil, soda, eggs, and first package of pudding until smooth. Pour batter into greased 9 x 13 inch pan.
Bake at 325 degrees F (165 degrees C) for 45 minutes, or cake tests done.
Beat whipped topping mix , milk, and pudding until stiff; pour over cooled cake. Refrigerate.
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