hello
 

new member here saying hi. and also with a question
i live in the north east and around here we don't let the fuel tank get below 1/4
of a tank as it can cause all sorts of problems.
In gas rigs the water from condensation in the tank can freeze the lines, or in diesel`s for the fuel to gel up .i own both would filling at 1/4 of a tank throw off my mpg calculations?

Hello and welcome. Nope, it doesn't matter if you fill up at 10 miles or 500 miles, so long as you brim each tank so you know exactly how much fuel you've used over said distance. If you don't fill the tank, Mark it as a partial fuel up.

Welcome! Sounds recording and getting real mpg is little challenging with that scenario.