Top Ups vs Partial Fill
 

If I top up my tank to full is that the same as a partial fill? I have a large tank so often I'll get gas when it's cheaper and top up the tank vs. waiting to empty.

Wanted make sure as I didn't mark partial fill and my 100/L is too good for a truck...lol.

A partial is only considered partial if you dont brim the tank. So filling up to the top regardless whether there's 1 gallon or 8 gallons left is a full fuel up as far as im aware, and should give accurate results.

^Correct.

If you're filling the tank then that would be considered a fill-up and should be logged as such.

A partial is if you put fuel into your tank, but do NOT fill it to the top.