Love my 06 F350 also, pulls our 12600 lb fiver like its not even there. Make sure you purchase some type of gauge to monitor your engine coolant temp and engine oil temp. Should not be more than 15 degrees apart driving at highway speed unloaded. I have the Scan Gauge II and really like it. In time you may end up having to replace items like your oil and egr cooler, fan clutch, turbo hoses and possible brake rotors. Just did all of this over the last couple of months and now have a great truck, unfortunately had to spent nearly $3500 to get there. Love my truck and now look forward to years of towing. Good luck, travel on.