Honda ACCORD Owner's Manual page 224

Break-in Period, Gasoline
Break-in Period
Help assure your car's future
reliability and performance by paying
extra attention to how you drive
during the first 600 miles (1,000 km).
During this period:
Avoid full-throttle starts and rapid
acceleration.
Avoid hard braking. New brakes
need to be broken-in by moderate
use for the first 200 miles (300
km).
Do not change the oil until the
recommended time or mileage
interval shown in the maintenance
schedule.
You should follow these same re-
commendations with an overhauled
or exchanged engine, or when the
brakes are relined.
224
Before Driving
Gasoline
Your Honda is designed to operate
on unleaded gasoline with a pump
octane number of 86 or higher. Use
of a lower octane gasoline can cause
a persistent, heavy metallic rapping
noise in the engine that can lead to
mechanical damage.
On EX-V6 with manual transmission
If you drive with the low engine
speed (below than about 1,000 rpm),
you may feel the engine knocking. In
this case, you can use premium
unleaded gasoline with a pump
octane number of 91 or higher to
prevent the engine from knocking.
We recommend gasolines containing
detergent additives that help prevent
fuel system and engine deposits.
Using gasoline containing lead will
damage your vehicle's emissions
controls. This contributes to air
pollution.
In Canada, some gasolines contain
an octane-enhancing additive called
MMT. If you use such gasolines,
your emission control system
performance may deteriorate and
the Malfunction Indicator Lamp on
your instrument panel may turn on.
If this happens, contact your
authorized Honda dealer for service.