I've searched and searched for this online and can't find a specific answer to the Ecodiesels. What is considered a High EGT temp for this engine? I realize this depends on what you're doing with the truck and where you're located/altitude etc etc. Can we use the rule of thumb that peak temps (short not sustained temps) of 1200 deg F max unloaded, 1300 deg F when loaded/towing? Anybody have anything definitive?