15 and one half hours without fueling? Man it must be cheap to thresh corn compared to most other crops.
I remember reading about a 9750 running 16 hours with out fueling.
If I ran a 9750 16 hours with out fueling the only noise for the last 5 hours would be the radio.
That's only about 2,000 bushels per hour.
During 7 hours of harvesting corn yesterday I averaged 4,200 bushels per hour (63,000 bushels had I gone 15 hours) using a 585R and a 1230 corn head in 220 + bushel corn at 20% moisture. I used a little over a half tank (or 130 gal. at 1 gal per acre). Going to do it all over again today too.