Hi there,
Fuel Consumption for a PA28 161
Performance Cruise:
75% Power - 2450 RPM - 10 USgal/hr
Economy Cruise:
65% Power - 2350 RPM - 8.8 USgal/hr
55% Power - 2200 RPM - 7.7 USgal/hr
Max Endurance:
6.5 hrs (55% power, 2150 RPM at sea level)
Hope this helps
JetSetJ