Buick 1995 Automobile User Manual


 
Fuel
1
NOTICE:
I
If
you try to do your own service work without
knowing enough about it, your vehicle could be
damaged.
Use regular unleaded gasoline rated at
87
octane
or
higher. It 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.
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
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 knock that means
you have a problem.
6-2