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
2008
60hp
1584cc
1580 cc
4 quarts
Under the seat
I understand you can use the same oil viscosity in both motor & transmission on the 2008 harley roadking!
3.5 quarts.
2008 53 HP, 2012 73HP
full charge should be 12.8-13volts