Crossed the devil mark today.
Took a break from working in the garage for dinner. Then I had to mess with the cat.
All lights on (brights, high beams, fogs, 4-100W off-raod lights, 55w reverse lights):
Gallons per hour: 0.39 to 0.45
Horsepower: 6.0 to 7.4
RPMs drop about 200 too
It takes alot of energy to power all of that awesomeness.