fuel type HONDA CIVIC 1991 Owners Manual

For proper operation of your car's emission controls, your engine is

designed to use unleaded fuel only.

CAUTION:
Using leaded or even low-lead gasoline could damage some of your
emission controls, and also void their coverage under the emission
controls warranty.
Use gasoline from pumps labeled unleaded, with a pump octane
number of 86 or higher. The pump octane number is an average of
the Research (R) octane and Motor (M) octane numbers. Use of a lower octane gasoline can cause persistent, heavy "spark knock" (ametallic rapping noise), which can lead to engine damage if severe.
CAUTION:
If you notice steady spark knock while holding a steady speed on a
level road, try changing brands of gasoline. If the spark knock persists, consult your Honda dealer. Failure to do so is considered
misuse, and misuse is not covered under the New Car Warranty.
Occasionally you may notice light spark knock while accelerating or
driving up hills. This is no cause for concern, it simply means your
engine is running at its most economical.
Gasoline Containing AlcoholIf you decide to use a gasoline containing alcohol ("gasohol"), be
sure its octane rating is at least as high as that recommended for
unleaded gasoline. There are two types of "gasohol": that
containing ethanol, and that containing methanol. Do not use
gasohol that contains more than 10% ethanol. Do not use gasoline
containing methanol (methyl or wood alcohol) that does not also contain cosolvents and corrosion inhibitors for methanol. Never use
gasoline containing more than 5% methanol, even if it has cosolvents and corrosion inhibitors.

NOTE.
Fuel system damage or vehicle performance problems resulting
from the use of such fuels is not covered under the new car warranties. Honda cannot endorse the use of fuels containing methanol since evidence of their suitability is as yet incomplete. Before purchasing fuel from an unfamiliar station, try to confirm
whether the fuel contains alcohol, of what kind, and how much. If
you notice any undesirable operating symptoms after using a
gasoline that contains alcohol; or one that you think contains alcohol, switch to an unleaded gasoline, as recommended above.
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Engine Oil and Filter (cont'd)
Fuel Efficient Oil For the best fuel economy from your car, it is recommended that
you use a fuel efficient SG grade oil. This oil is usually identified by
the words such as: "Energy Conserving II," "Gas Saving," and "Fuel Saving," etc.
Changing Oil and Filter
Engine oil and filter should be changed together every 6 months or
7,500 miles (12,000 km), whichever comes first. The filter is located
on the engine block, below the intake manifold. A special "cap
type" oil filter wrench is required (available from your Honda dealer). Use only a genuine Honda filter or its equivalent.

CAUTION:

The oil filter cannot easily be removed from above the engine. For
this reason it is recommended that the oil filter change be done by a skilled mechanic.
1. Start the car to warm up the engine, then shut it off.
2. Remove the engine oil filler cap and drain bolt, and drain the oil.
A warmed-up engine and the oil in
it are hot; be careful not to burn yourself.
3. Remove the oil filter and let the remaining oil drain out.
4. Install a new filter according to
the instructions on or with the

filter.

5. Reinstall the drain bolt with a new washer and tighten it securely.Refill the engine with the recom-
mended oil, to the upper mark on

the dipstick.

ENGINE OIL CAPACITY (including filter):
3.5
(3.7 US qt, 3.1 Imp qt)

OIL FILTER

ENGINE OIL
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