Well I got 168 miles out of MY SV on a full tank which I think is rather good.
I get less around town espically going to work, as its stop start filtering in busy traffic, i get probally 120 miles...
It really depends on how I ride and aclerate, faster u go the more gas you use. I got work err in 10/15 mintues last week, I guess I used a bit more then
If I'm around loads of petrol station with the light flashing I'll wait it turns on fully, but I did think I was going to run a while back, the bike coughed and I though oh crap. I had just over litre in the tank by the time I filled up!
The K6 fuel does flash....also it flashes and goes off depends sometimes on the level of the ground.