2001 Mercury Cougar Owner Guide 2nd Printing - Page 241
2001 Mercury Cougar Manual
Page 241 highlights
Maintenance and care Octane recommendations Your vehicle is designed to use regular gasoline with an (R+M)/2 octane rating of 87. We do not recommend gasolines labeled as regular" in high altitude areas that are sold with octane ratings of 86 or even less. For Cougar S vehicles, please use premium gasoline with an octane rating of 91. Do not be concerned if your vehicle sometimes knocks lightly. However, if it knocks heavily under most driving conditions on the recommended octane, see your dealer or a qualified service technician to prevent any engine damage.
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 |
Maintenance and care
Octane recommendations
Your
vehicle
is designed
to use
regular gasoline
with
an
(R+M)/2
octane
rating
of 87.
We
do not
recommend
gasolines
labeled
as
²regular"
in
high
altitude
areas
that
are
sold
with
octane
ratings
of
86 or
even less.
For
Cougar
S
vehicles,
please
use
premium
gasoline
with
an
octane
rating
of 91.
Do not
be
concerned
if
your
vehicle
sometimes
knocks lightly.
However,
if it knocks heavily
under
most
driving
conditions
on
the
recommended
octane,
see
your
dealer
or
a
qualified
service
technician
to prevent
any
engine
damage.