Oxalic acid crystals are available from cleaning chemical companies. Formerly that was the primary component of Dupont #7 radiator cleaner----if my memory serves me correctly. Similarly you must follow the cleaning routine with a neutralizer, usually baking soda. I don't think that is as harsh as muriatic acid. ----------------mg ---------- Original Message ---------- From: Kenneth Wilson <jblken@xxxxxxxxxxx> To: Matt Allyn <allynentertainment@xxxxxxxxx>, Chrysler300@xxxxxxxxxxxxxxx Subject: Re: [Chrysler300] Radiator Clean Out Date: Tue, 01 Sep 2009 22:18:44 -0700 Matt; I used Murattic acid (a gallon of pool cleaner will do). Run it through the system for a bit - re-flush it out and with baking soda to neutralize any residue acid. Another product I use to use was Ironcad (or was it Irontite- I think that is thecorrect name). May be hard to find and is expensive but was the best radiator cleaner (it's is a two part cleaner). ken wilson 62 H and sport 300 Matt Allyn wrote: >Some of the tubes in my 1962 300 are somewhat plugged with good old rust flakes. > >Is a good flush in order? >OR >Is there any good product out there that helps disolve and rid of the flakes ALONG with flushing the system and adding a new gallon of coolant? > >Thanks! > >Matt Allyn > > > > >[Non-text portions of this message have been removed] > > > >------------------------------------ > >To send a message to this group, send an email to: >Chrysler300@xxxxxxxxxxxxxxx > >For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm > >For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links > > > > > > [Non-text portions of this message have been removed] ____________________________________________________________ Best Weight Loss Program - Click Here! http://thirdpartyoffers.juno.com/TGL2131/fc/BLSrjnsEGrFEHsuSQUvIjUFuJctjnxdciwa29jAj6QOVFmTFqU4Eeigk8UY/ [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/