I kid you not 300 k's light on then it does the off on off on thingy untill it stays on, and then the nervous 34 K's be interested to see how far i can go before it cuts out.
Got 200 miles and no warning light on !!!!!! Over 5 days did 760 miles, averaged 48 mpg, two up, taking it fairly easy as roads were mostly wet.
While I guess mostly motorway miles when I rode to Weymouth and a few rideouts with my mates and return, on my 2012 speedy I was getting 150 miles to reserve with some spirited riding. I am sure that would drop a bit in the twisties when up and down the gears though.
Just a thing to remember, For those running fuel injected bikes. If you allow yourself to completely run out of fuel, the fuel pump will be running dry without lubrication and could cause it damage plus fuel filter damage. And they are expensive to replace, pump £157+vat; filter £19+vat; including a new tank gasket £18.92+vat .
For the couple of seconds dry running, I doubt you would do much damage, not like running a diesel fuel pump with petrol in it!!! Don't do it, I did on the Discovery, not a good idea.