1993 CHEVROLET LUMINA fuel additives

Downloaded from www.Manualslib.com manuals search engine I Fuel
Use regular unleaded gasoline rated at
87 octane or higher. It should meet
specifications ASTM D4814 in the
U.S.
and CGSB 3.5-92 in Canada. These
fuels should have the proper additives,
so you should not have to add anything
to the fuel.
In the
U.S. and Canada, it’s easy to be
sure you get the right kind of gasoline
(unleaded). You’ll see “UNLEADED”
right on the pump. And only unleaded
nozzles will fit into your vehicle’s filler
neck.
Be sure the posted octane is at least
87.
If the octane is less than 87, you may
get a heavy knocking noise when you
drive. If
it’s bad enough, it can damage your
engine.
If you’re using fuel rated at
87 octane or
higher and you still hear heavy
knocking, your engine needs service. But don’t worry if you hear a little
pinging noise when you’re accelerating
or driving up a hill. That’s normal, and
you don’t have to buy a higher octane
fuel to get rid of pinging. It’s the heavy,
constant hock that means you have a
problem.
Fuel Capacity:
V6 Engines-16.5 U.S. Gallons (62 L).
L4 Engine--17.1 U.S. Gallons (65 L).
Use unleaded fuel only.
What about gasoline with blending
materials that contain oxygen, such
as
MTBE or alcohol?
MTBE is “methyl tertiary-butyl
ether.” Fuel that is no more than
15%
MTBE is fine for your vehicle.
Ethanol is ethyl or grain alcohol.
Properly-blended fuel that is
no more
than 10%
ethanol is fine for your
vehicle.
Methanol is methyl or wood alcohol.
I NOTEE
Fuel that is more than 5
methanol is bad for you
Don’t use it. It can corr
parts in your fuel system
and also
damage plastic and rubber parts.
That damage wouldn’t be covered
under your warranty. 5% or less, there mus
“cosolvents” and corrosi

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
Gasolines for Cleaner Air
Your use of gasoline with detergent
additives will help prevent deposits
from forming in your engine and fuel
system. That helps keep your engine in
tune and your emission control system
working properly. It’s good for your
vehicle, and you’ll be doing your
part
for cleaner air.
Many gasolines are now blended with
materials called oxygenates. General
Motors recommends that you use
gasolines with these blending materials,
such as MTBE and ethanol. By doing
so, you can help clean the air, especially
in those parts of the country that have
high carbon monoxide levels. In
addition, some gasoline suppliers are
now producing reformulated gasolines.
These gasolines are specially designed
to reduce vehicle emissions. General
Motors recommends that you use
reformulated gasoline.
By doing so, you
can help clean the air, especially in
those
parts of the country that have
high ozone levels.
You should ask your service station
operators
if their gasolines contain
detergents and oxygenates, and if they
have been reformulated to reduce
vehicle emissions.
I
Fuels in Foreign Countries
If you plan on driving in another
country outside the
U.S. or Canada,
unleaded fuel may be hard to find.
Do not use leaded gasoline. If you use
even one tankful, your emission
controls won’t work well or at all. With
continuous use, spark plugs can get
fouled, the exhaust system
can corrode,
and your engine oil can deteriorate
quickly. Your vehicle’s oxygen sensor
will be damaged.
All of that means
costly repairs that wouldn’t be covered
by your warranty.
I

Downloaded from www.Manualslib.com manuals search engine SAE 5W-30
As shown in the viscosity chart, SAE
5W-30 is best for your vehicle.
However, you can use
SAE 1OW-30 if
it’s going to be
0°F (-18°C) or above.
These numbers on
an oil container
show its viscosity, or thickness.
Do not use other viscosity oils, such
as SAE 1OW-40 or SAE 2OW-50.
GRADE MAY BE USED AT TEMPERAT
ABOVE
40 DEGREES F (4 DEGREES C
Energy Conserving I1
Oils with these words on me
container will help you save fuel.
This doughnut-shaped logo (symbol) is
used on most oil containers to help you
select the correct oil.
You should look for this on the
oil
container, and use only those oils that
display the logo.
GM Goodwrench@ Oil (in Canada, GM
Engine Oil) meets all the requirements
for your vehicle.
Engine Oil Additives
Don’t add anything to your oil. Your
Chevrolet dealer is ready to advise if
you think something should be added.