Honda 2003 Accord Coupe Owner's Manual page 315

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Transmission Fluid
Pour the fluid to the filler hole slowly
and carefully so you do not spill.
Clean up any spills immediately.
Spilled fluid could damage
components in the engine
compartment.
If Honda MTF is not available, you
may use an SAE 10W-30 or 10W-40
viscosity motor oil with the API
Certification seal that says ''FOR
GASOLINE ENGINES'' as a
temporary replacement. However,
motor oil does not contain the proper
additives, and continued use can
cause stiffer shifting. Replace as
soon as it is convenient.
312
Maintenance
The transmission should be drained
and refilled with new fluid according
to the time and distance recommen-
dations in the maintenance schedule.
If you are not sure how to check and
add fluid, contact your Honda dealer.