Preheat oven to 350°F (175°C).

In a large bowl, cream together oil and both granulated and brown sugars until smooth.

Beat in eggs one at a time, then stir in vanilla.

In a separate bowl, whisk together flour, baking soda, baking powder, and salt.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Stir in oats, chocolate chips, and raisins.

Drop by rounded teaspoons onto a greased cookie sheet.

Bake for 8 to 10 minutes, or until edges are golden brown.

Let cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.