As promised I completed my 1500 mile trip, here's what I learned.
The 3.0 loves to cruise at around 1600 rpms and between 68 and 73 for best mileage. On my trip a lot of cruising was around 75-80 and 1800 rpms.
With this I had gone through 4 regens all taking place around 300 miles. I found it...