Preheat the oven to 350 degrees. Spray a large 10-12 cup bundt pan with Baker's Joy or heavily grease and flour the pan.
In a bowl, whisk together the flour, salt, and baking powder. Set aside.
In the bowl of an electric mixer, beat the oil, sugar, and orange zest on high speed until combined. Add the eggs, one at a time, beating well after each addition. Mix in the vanilla extract.
In a measuring cup, combine the orange juice and milk.
Add the flour mixture to the wet ingredients in 3 additions, alternating with the orange juice and milk, and beating on medium speed after each addition.
Bake for 45-55 minutes or until a toothpick inserted in the center comes out clean. Allow to cool for 15-20 minutes, then turn the cake out onto a cooling rack and cool completely.