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The DR does around 14-15 miles to a litre, I think. 60-something mpg, depends on riding environment.
So minus spillage, idling etc, I’d need to be sure I can safely reach a garage within 10 miles. That feels way too limited, especially on a byway where you might waste half that fuel just getting out to the nearest main road.
The XJ is less efficient than that. Can’t remember exactly, I think mpg was in the low 50’s with how I’m riding. 2 litres on the road would guarantee a Shell, or at worst a Texaco garage.
So far, the DR will get to 200 miles on a full tank (Acerbis 16L) so I just refuel around 160. Similarly, the XJ hits reserve at about 150 miles, so I flip the tap at 140-odd and aim for the petrol station.
pdlouche-
I'm not really sure what mine will do - somewhere around 180mpg for the Bown and a claimed 240mpg for the Trojan - certainly more than a day's worth of riding per tankful.
I was thinking more to avoid a 'trial and error' approach with something intended for camping stove fuel - or at least confirm suitability before inadvertently filling a pannier with petrol :)
MrE
I've used a Sigg camping fuel bottle in the past. Whatever they used as a gasket didn't like premixed petrol so I replaced it with one cut from nitrile rubber - been ok so far.
The extra 1L is worth it for me -gives an extra 40+ miles range, but then my machines barely count as motorcycles.