Well I did my fisrt full calculations on my 1st road trip with my HF.
Filled the tank, drove 352 miles, filled the tank, 6.857 gals.
60 miles 'round town the rest on the freewaym, 70 MPH.
That computes to 51.33 MPG, I am a happy camper!
The HF really did its job. And I have a 15B7, 102...