I own a 2004 2.3....Yes its mine, FINALLY paid off. Anyways my dealer suggested that around 30,000 i should do a tranny drain and fill and then at 60,000k a flush. Then every other 30k interval go between a flush and drain and fill. Does that sound ok? Belive it or not it only has 29,500 on it. So the cost of the drain and fill is...50.00 and 140.00 for a flush. Ive had NO problems with my 3 so far.