mine reads past full when full , at 1/2 tank Im` down about 6-7 gal`s, at 1/4+_ im down 12 gals...remember that its an 18 gal tank, but you can never use the last 3 , at least it seems like...when I`m empty (run out) I can only put in 15- 15.5 gals...."air bubble" is what I`ve heard, b/c of 'leaning tank'
in my Volvos I`ve been able to run down to the last 1/2 gal. w/o a problem , just dont dare it in the Bird
