Preheat oven to 350. Grease and flour a 10 inch Bundt pan.
Mix together cake mix, pudding mix, eggs, water and oil in a large bowl at medium speed for 2 minutes. Pour into pan and bake at 350 for 50-60 minutes. Cool 25 minutes. Invert onto serving plate. Let cool completely.
Combine powdered sugar, lemon juice and vegetable oil in a small bowl.
Stir until well-blended. Unlike a traditional glaze, this should be thick, like a frosting.
Drizzle glaze from the end of a spoon over the cake, fairly thickly, shaking the spoon lightly, as you go.