Ok, So I am about get my 30,000 service done and as we all know its $$$. I am going to pay $480 is that resonable and they recommend flushing the trans. To flush the trans its about $180. Before you guys start I don't have have the time to do this myself. I am working 12hr days 6 days a week. So my question is do I really need to flush my trans when they will do a drain and fill with the 30,000 service?