I have been using R414B for more than ten years and it produces temperatures as cold as R12. It requires no modifications to the A/C equipment and it requires 20% less volume to balance the system. It is compatible with R12 & mineral oil so no purging of the system prior to installation. It MUST be charged as a liquid to prevent separation of it's components. Only available in 25 lb. or larger bottles and amazingly they have a dip tube so no need to turn bottle upside down. I'm moving to Alaska for the summer. 50 degrees here this AM. Apparently the new normal. Minnesota Marshall ------------------------------------ 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/