2007 Toyota Sienna Owners Manual - Page 388

07 SIENNA_U (L/O 0612) Break−in period Drive gently and avoid high speeds. Your vehicle does not need an elaborate break−in. But following a few simple tips for the first 1600 km (1000 miles) can add to the future economy and long life of your vehicle: Fuel FUEL TYPE Your new vehicle must use only unleaded gasoline. To help prevent gas station mix−ups, your Toyota has a smaller fuel tank opening. The special nozzle on pumps with unleaded fuel will fit it, but the larger standard nozzle on pumps with leaded gas will not. At a minimum, the gasoline you use should meet the specifications of ASTM D4814 in the U.S.A. and CGSB 3.5−M93 in Canada. OCTANE RATING Select Octane Rating 87 (Research Octane Number 91) or higher. Use of unleaded gasoline with an octane rating lower than 87 may result in engine knocking. Persistent knocking can lead to engine damage. If your engine knocks...If you detect heavy knocking even when using the recommended fuel, or if you hear steady knocking while holding a steady speed on level roads, consult your Toyota dealer. However, occasionally, you may notice light knocking for a short time while accelerating or driving up hills. This is normal and there is no need for concern. D Avoid full throttle acceleration when starting and driving. D Avoid racing the engine. D Try to avoid hard stops during the first 300 km (200 miles). D Do not drive for a long time at any single speed, either fast or slow. D Do not tow a trailer during the first 800 km (500 miles). NOTICE Do not use leaded gasoline. Use of leaded gasoline will cause the three− way catalytic converter to lose its effectiveness and the emission control system to function improperly. Also, this can increase maintenance costs. 388 2007 SIENNA from Oct. '06 Prod. (OM45437U)