Hi Francis -
Here's what the manual has to say:
Quote:
Can the ScanGauge use Imperial Gallons?
ScanGauge uses gallons as a unit label, not a unit of measurement. Because of this, it can read in either
US or Imperial Gallons without conversion. Make sure all units entered into ScanGauge are consistent,
and the readings should remain accurate for US or Imperial Gallons.
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So, for their system to work, they want you to convert your L purchased into Gal before entering the value at fill-up time.
I have a feeling that despite saying their gallon is "just a label", if you were to enter the tank size in L, then switch units to Gal., it would show your tank size as a US gallon conversion. Can you confirm this?