Honda Accord Coupe 2004 Online Reference Owner's Manual page 167

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Break-in Period, Gasoline Type
Break-in Period
Help assure your vehicle'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 for the first
200 miles (300 km).
Do not change the oil until the
scheduled maintenance time.
You should also follow these re-
commendations with an overhauled
or exchanged engine, or when the
brakes are replaced.
We also recommend that you should
not tow a trailer during the first 500
miles (800 km).
164
Before Driving
Gasoline Type
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
occasional metallic knocking noises
in the engine and will result in
decreased engine performance.
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.
In addition, in order to maintain good
performance, fuel economy, and
emissions control, we strongly
recommend, in areas where it is
available, the use of gasoline that
does NOT contain manganese-based
fuel additives such as MMT.
Use of gasoline with these additives
may adversely affect performance,
and cause the Malfunction Indicator
Lamp on your instrument panel to
come on. If this happens, contact
your authorized Honda dealer for
service.
Some gasoline today is blended with
oxygenates such as ethanol or
MTBE. Your vehicle is designed to
operate on oxygenated gasoline
containing up to 10 percent ethanol
by volume and up to 15 percent
MTBE by volume. Do not use
gasoline containing methanol.

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