I have the 2014 Motor Trike Razor. I have consistently always gotten 30MPG and some change. At 8000 miles I did my own oil change and used the Fram Motorcycle high flow oil filter. I compared the Honda filter with this one and the holes for oil flow are so much bigger in the Fram.
The very first thing I noticed was the motor seemed so much smoother and quieter, right out of the garage. Been riding it quite a bit, with the first fill up, I checked my mileage and I got 34mpg and change. I have never gotten this kind of mileage. I heard that it would help mileage a bit, but 4MPG is awesome. I got my Rotella T6 at Walmart for $19.57. I like the oil so much, I went back and bought the last 3 gallons and going to use it in both of my cars as well.
I am totally happy with this oil.