Ok, does that mean that a 160 degree thermostat opens SMALLER or is open for LESS time than a 190 degree thermostat? Following the slower is cooler logic, the slower the air moved through the radiator, the more cooling would happen. That is demonstrably not true in everyday city driving. Over the years I have had brand new (from the parts store) water pumps that didn't work properly. I put it down to improper clearances between the impeller and the housing or even improper impeller. The next pump always worked well. Not trying to start a flame war here, but IMHO the slower is better is an old mechanic's tale. The only time I can think of that faster would be worse is if some area was left in an eddy that never moved in the current to transfer heat. Thas' my story and I'm stikin' to it. Bill Huff At 6/23/200911:23 AM, james mcmullan wrote: >Hi List .You cannot move Cold ,You can move Heat (ether in or out of >something) But it takes TIME .You haft to hold watter in the >radiator long enough for the heat to transfer to the core and be >removed by air flow.That is the the purpose of the thermostat .If >the watter flows to fast it will not have TIME to transfer heat Jim >McMullsn 300 F. > >[Non-text portions of this message have been removed] > > [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/