Sienna FWD V6-3.3L (3MZ-FE) (2006)
Fuel: Specifications
FUEL TYPE: UNLEADED gasoline
OCTANE RATING: 87 or higher (Research Octane Number 91)
For improved vehicle performance, the use of premium unleaded gasoline with an Octane Rating of 91 (Research Octane Number 96) or higher is
recommended.