2011 Ford F-250 Super Duty Q&A
2011 Ford F-250 Super Duty Question: What kind of coolant additive should I use and how often?
(Almost) everything you ever wanted to know about coolant. http://www.glysantin.de/171-1-G05.html You coolant should be good for 5 years and the service interval is reccomended at 105K miles. The Motorcraft specialty orange is NOT Dexcool (G34 which is an HOAT hybrid organic acid technology) it is an OAT. Ford has been using G05 for its premium Gold and the specialty orange. If there is any question about the exact spec got with the O.E. fluid. - cardocIII