Lexus LS460 2008 Owner's Manual page 670

6-1. Specifications
Engine
Model
Type
Bore and stroke
Displacement
Drive belt tension
Fuel
Fuel type
Octane rating
Fuel tank capacity
670
1UR-FSE
8-cylinder V type,
4-cycle, gasoline
3.70 3.27 in.
(94.0  83.0 mm)
281.2 cu.in.
3
(4608 cm )
Automatic adjustment
Unleaded gasoline only
91 (Research octane number 96) or higher
22.1 gal. (84 L, 18.4 lmp.gal.)