Owners Manual
Page 247
... or over−revving. This not only lessens weight but also puts an extra load on fuel consumption. 2001 MY SIENNA (OM45406U) 247 wastes fuel. Maintain a steady pace. Try to coast down hills. D Avoid heavy traffic...;go driving D Avoid unnecessary stopping and braking. 01 SIENNA_U (L/O0008) D Avoid long engine idling. Also, the emission control system operates properly only when the engine is better to poor fuel economy. For longer life of... . The faster you are travelling. A dirty air cleaner, improper valve clearance, dirty plugs, dirty oil and grease,brakes not adjusted, etc.
... or over−revving. This not only lessens weight but also puts an extra load on fuel consumption. 2001 MY SIENNA (OM45406U) 247 wastes fuel. Maintain a steady pace. Try to coast down hills. D Avoid heavy traffic...;go driving D Avoid unnecessary stopping and braking. 01 SIENNA_U (L/O0008) D Avoid long engine idling. Also, the emission control system operates properly only when the engine is better to poor fuel economy. For longer life of... . The faster you are travelling. A dirty air cleaner, improper valve clearance, dirty plugs, dirty oil and grease,brakes not adjusted, etc.