Hello All, Could someone answer the following questions. 1) - What is the difference between thermal and non thermal clutch fans 2) - Will a 7 blade fan cool the radiator better / more efficiently that a 5 blade fan 3) - Will replacing a 5 blade fan with a 7 blade fan impact on the operation of the original 5 blade clutch fan mechanism 4) - If the 7 blade fan is 1 ½ inches larger in dia (19 ½), what negative effect, if any, would this cause Thanks for your thoughts. Charlie in Ottawa ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@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: Chrysler300-digest@xxxxxxxxxxxxxxx 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/