TOYOTA 2010 Sienna - Manual (Page 464)

441
4-3. Do-it-yourself maintenance
4
Mainten
ance an
d ca
re
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Recommended viscosity
SAE 5W-30 is the best choice for
good fuel economy, and good
starting in cold weather.
If SAE 5W-30 oil is not available,
SAE 10W-30 oil may be used.
However, it should be replaced
with SAE 5W-30 at the next oil
change.
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How to read oil container labels
Some oil containers are labeled with ILSAC certification marks that
help you to select the proper oil.
Outside temperature