Olive oil has been king-of-the-oils for a while, but coconut oil may be a better choice for fat burning.  Coconut oil is made up of more than 50 percent of medium-chain triacylglycerol (MCT), a fatty acid that increases fat oxidation, thus enhancing weight loss, according to a study in the American Journal of Clinical Nutrition.  Researchers had test subjects use 4 to 5 teaspoons of MCT oil or olive oil each day for 16 weeks.  The MCT group lost four more pounds than the olive oil group.