Toyota Sienna 2010 Owner's Manual page 537

6-1. Specifications
Engine
Model
Type
Bore and stroke
Displacement
Drive belt tension
Valve clearance
Fuel
Fuel type
Octane rating
Fuel tank capacity
544
2GR-FE engine
6 cylinder V type, 4 cycle, gasoline
3.70 × 3.27 in. (94.0 × 83.0 mm)
210.9 cu.in. (3456 cm
Automatic adjustment
Unleaded gasoline only
87 (Research Octane Number 91) or higher
20.9 gal. (79 L, 17.5 Imp.gal.)
3
)