Lexus IS250 2006 Owner's Manual page 395

Engine
Model
Type
Bore and stroke
Displacement
Drive belt tension
Fuel
Fuel type
Octane rating
Fuel tank capacity
IS250
4GR-FSE
6-cylinder V type,
4-cycle, gasoline
3.27 3.03 in.
(83.0  77.0 mm)
152.5 cu.in.
3
(2500 cm )
Automatic adjustment
Unleaded gasoline only
91 (Research octane number 96) or higher
17.2 gal. (65 L, 14.3 lmp.gal)
6-1. Specifications
IS350
2GR-FSE
6-cylinder V type,
4-cycle, gasoline
3.70  3.27 in.
(94.0  83.0 mm)
210. 9 cu.in.
3
(3456 cm )
6
377