Honda Accord Owner's Manual page 310

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Honda Motor Oil is the preferred
5W-20 lubricant for your vehicle. It is
highly recommended that you use
Honda Motor Oil in your vehicle for
optimum engine protection. Make
sure the API Certification Seal says
''For Gasoline Engines.''
API CERTIFICATION SEAL
Table Of Contents
The oil viscosity or weight is
provided on the container's label.
5W-20 oil is formulated for year-
round protection of your vehicle to
improve cold weather starting and
fuel economy.
Ambient Temperature
2008 Accord Coupe
Adding Engine Oil
Synthetic Oil
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. You must
follow the oil and filter change
intervals shown on the information
display.
Engine Oil Additives
Your vehicle does not require any oil
additives. Additives may adversely
affect the engine or transmission
performance and durability.
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