Actually the benefit of the liver flush is that it indeed makes the gall bladder expel bile, that´s why people claim they feel the benefits. But actually you can achieve the same results by using specific herbs, which is way better than the whole liver flush protocol.
Even small amounts of oils with meals such as a olive oil an vinegar dressing on a salad will help keep the bile from becoming stagnant. Taking very large amounts of oil just puts the body at risk from possibly lodging a real stone in the bile ducts if any real stones are present.