HONDA 2003 Odyssey - Owner's Manual - Manual (Page 301)

You may use a synthetic motor oil if
it meets the same requirements
given for a conventional motor oil: it
displays the API Certification Seal,
and it is the proper weight as shown
on the chart. When using synthetic
oil, you must follow the oil and filter
change intervals given in the
maintenance schedule.
The oil’s viscosity or weight is
provided on the container’s label.
Select the oil for your vehicle
according to this chart.
5W-20 oil is formulated for year-
round protection of your Honda, to
improve cold weather starting, and
to help your engine use less fuel.
Make sure the API Certification Seal
says ‘‘For Gasoline Engines.’’ Synthetic Oil
Engine Oil
Maintenance 298
Ambient Temperature
API CERTIFICATION SEAL
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