Yes I have done this several times. I use the powered soap. Just put some in the raditator. About the same amount as your wife put in the wash machine to do clothes. I run it for 20 miles or so, then dump and flush. Sometimes I ha ve had to do it a couple of times. Works for me. l Like a fellow said in another post he use cascade automatic dish soap. Both work great and a lot better than the commercial stuff that you buy from the parts stores. ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm