In a large bowl, beat the sugar with the vegetable oil using a mixer. Once the mixture is smooth, add the eggs one at a time, waiting for each to be well mixed before adding the next. Add the vanilla extract, and after sifting the flour with the baking powder, gradually add them to the bowl, alternating with the orange juice. Beat until well combined.

Next, take a cake pan and butter and flour it before pouring in the mixture. Place it in a preheated oven at 350°F (180°C) for 35-40 minutes.

Once it rises and gets a little color, check it with a toothpick to see if it's done, then remove it from the oven. Let it cool, sprinkle with powdered sugar, and it's ready to enjoy.