Well I've developed a small power steering leak on my 02 7.3 and after further inspection it appears that I have the common problem of the power steering line rubbing against the shock tower until it ruptured. I have the new line and everything ready to go on. My question is, whats the best way to go about it so when I disconnect the line I don't drain all of the fluid out of the reservoir/system. Also I will the method for flushing the power steering fluid where you disconnect the return and work the steering wheel back and forth/pressing the brakes while insuring the reservoir stays full be sufficient to remove all of the air? Thanks.