Hello thanks for the tips on the Fords with the 6.4L. I just purchased a 2010 Ford F-250 SD. I wish I had taken the time to inspect the vehicle properly. To be honest after reading your post I'm a bit concerned. I have been getting the " Water in Fuel " Sensor coming on about every 250-400 miles. I drain it underneath and it seems to be fine for another 250-400 miles. Talking to a friend last night that owns a 2008. He said it was never and issue for him. He rarely is asked to drain his. Like twice a year he said.
Plan is to have the truck in for a service. Change oil "synthetic" , Filters OEM, Inspect flush or clean coolient, top off batteries. Any other recommendations.
Also you mention Ext Warr Plan with Ford. Which plan did you go with. They offer a few and I was wondering which package you chose. My truck is loaded to with NAV and SROOF. Thanks again my man!!