octane CHEVROLET BLAZER 1995 2.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine Doing Your Own Service Work
If you want to do some of your own service work, you’ll want to get the
proper
GM Service Manual. It tells you much more about how to service
your vehicle than this manual can.
To order the proper service manual, see
“Service Publications” in the Index.
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 91 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.
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Downloaded from www.Manualslib.com manuals search engine The gasoline you use should meet specifications ASTM D4814 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.
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
91 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:
1 Fuel that is more than 5% methanol is bad for your vehicle.
I Don’t use it. It can corrode metal parts’in your fuel system and
1 also damage plastic and rubber parts. That damage wouldn’t b\
e
1 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.
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