1995 CHEVROLET ASTRO CARGO VAN fuel additives

Downloaded from www.Manualslib.com manuals search engine YOU should keep a record with all parts receipts and list the mileage and the
date of any service work
you perform. See “Maintenance Record” in the
Index.
I NOTICE:
If you try to do your own service work without knowing enough
about it, your vehicle could be damaged.
Fuel
Use regular unleaded gasoline rated at 87 octane or higher. Use premium
unleaded gasoline rated at
9 1 octane or higher for high power performance,
when towing a trailer
or with a high payload requirement. But when
operating with a light load as a normal condition, you may use middle grade
or regular unleaded gasolines.
The gasoline you use should meet specifications ASTM
D48 14 in the
United States 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.
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Downloaded from www.Manualslib.com manuals search engine In the United States 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
9 1 for premium, 89 for middle grade
and 87 for regular. 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 91 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 it. It’s the heavy,
constant knock that means
you have a problem.
What about gasoline with blending materials that contain oxygen
(oxygenates), 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.
NOTICE:
Fuel that is more than 5% methanol is bad for your vehicle.
Don’t
use it. It can corrode metal parts in your fuel system and
also damage plastic and rubber parts. That damage wouldn’t b\
e
covered under your warranty. And even at
5% or less, there
must be “cosolvents” and corrosion preventers in this fuel\
to help avoid these problems.
Gasolines for Cleaner Air
Your use of gasoline with deposit control 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 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.
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Downloaded from www.Manualslib.com manuals search engine 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
deposit control additives and oxygenates, and if they have been
reformulated to reduce vehicle emissions.
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.
To check on fuel availability, ask an auto club, or contact a major oil
company that does business
in the country where you’ll be driving.
You can also write us at the following address for advice. Just tell us where
you’re going and give your Vehicle Identification Number (VIN).
General Motors Overseas Distribution Corporation,
North American Export Sales (NAES)
1908 Colonel Sam Drive
Oshawa, Ontario
LlH
8P7
Filling Your Tank
The cap is behind a
hinged door
on the
driver’s side
of your
vehicle.
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