Hi guys. I got a tokumbo rx 350 2008 2gr engine. Since I bought my car. The car short oil at least one quarts for the first 3000 miles. What could be the cause of this oil shortage. I have not seen noticeable oil leaks . What should I do . And what could be the cause of this. If anyone had such experience. Please share with me what you did to stop it. Thanks in anticipation. Just afraid of mechanics