consult your owners manual. however, i always use premium. trying to save money on gas only cost more down the road on repairs.
I hit 113 mph on my 2008 Road King Classic. Same engine as the 2007.
2008
60hp
2008
1584cc
4 quarts
1580 cc
Under the seat
2008 53 HP, 2012 73HP
full charge should be 12.8-13volts
It has approximately 79 horsepower.
No, they are smaller