Toyota Sienna 2010 Owner's Manual page 435

4-3. Do-it-yourself maintenance
Adding engine oil
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Make sure to check the oil type and prepare the items needed before
adding oil.
Oil grade
Items
Remove the oil filler cap by turning it counterclockwise.
STEP 1
Add engine oil slowly, checking the dipstick.
STEP 2
Install the oil filler cap by turning it clockwise.
STEP 3
The approximate quantity of oil needed to raise the level from low to full on
the dipstick is indicated as follows:
1.6 qt. (1.5 L, 1.3 lmp. qt.)
440
If the oil level is below or near
the low level mark, add engine
oil of the same type as already in
the engine.
ILSAC multi-grade engine oil
Clean funnel