Originally Posted by cooljjay

To keep carbon from building up in the engine and thus gunking up things that cannot be clean ie rings....

Why do you want a 240D auto??? I am having this exact conversation with another person....they are dead slow! I have a 300D na auto...just yesterday climbing hills n altitude I was down to 45mph on a highway that has a 65mph speed limit...that is with a 77hp car...this one is 65hp..