of Fuel Range (main and reserve) - 1979 Kz1300 A1

42.7 miles to empty running at 55 - 65 mpg - from actually riding the bike to empty, up and down La Panza Road.

Calculating it out results in more miles.. but I don't think the tank will fully drain...

82,253 ending miles minus 82,234 starting miles equals 219 miles on the day.

Tank Capacity
@ 30 MPG = 169 miles
@ 28 MPG = 158 miles
@ 35 MPG = 141 miles
@ 35 MPG = 141 miles

At 219 miles ridden, took 4.591 gallons to fill.

Tank size is 5.6 gallons.
5.6 - 4.6 = 1 gallon left
(after I had already ridden 24 miles into Reserve)

1 gallon @ 30 mpg = ~30 miles + 24 already ridden for ~ 50 miles total on Reserve tank.

Two questions:

Do you still have the original fuel tap installed?

In Spain we have 95 or 98 octane gasoline, what type do you use?