I'm sorry to say that this topic in my view is a total non-topic
(is that proper English?). It looks like
an empty ta
nlk.
Everyone will know by now that fuel consumption according to the BC is never exactly correct. Just refill the tank when it's almost empty. That can be when none, still one or maybe two bars are visible. Or when a particularly, extremely tempting gas station
comes into view of course.
I did my last tank filling when I still had some 10 km. reach according to the BC. Completely filled up I got 34.54 liters in the tank. So there was almost 5.5 liters left.
Difference in consumption between driving the tank (almost) completely empty or always refueling after some 200 km., topping up some 10 litres, is totally nonsensical. The BC might even show a difference, but it doesn't mean a thing, because that BC, as we know, isn't precise.
Theoretically, it's simple: by always driving with an almost full tank, you drag more weight than necessary and you drive less economically. Period!
The only way to determine actual fuel consumption is to divide the number of kilometres/miles driven by the litres/gallons tanked. An easy way is to use
https://www.spritmonitor.de/Oh... and you save the most fuel by doing short(er) trips by bike. And besides: it also seems to be very healthy...
PS Stale gasoline...? After almost a month?