Cessna 172P - Fuel

SECTION
8
HANDLING,
SER,VICING
&
MAINTENANCE
FUEL
APPROVED
FUEL
GRADES
(AND
COLOR,S)
--
100LL
Grade Aviation
Fuel
(BIue).
100
(Formerly
100/130)
Grade Aviation
Fuel
(Green).
NOTE
CAPACITY
EACH
STANDARD
TANK
--
41.5
Galtons.
CAPACITY
EACH
LONG
RANGE
TANK --
22
Gallons
CAPACITY
EACH
INTEGRAL
TANK
--
84 Ga,ltons.
NOTE
NOTE
CESSNA
MODEL
172P
Isopropyl
alcohol
or ethylene glycol
rnonomethyl
ether
may be added
to
the fuel supply
in
quantities
not to
exceed
lVo
or
.I6Vo by volume,
respectively,
of the
total.
Refer to
Fuel
Additives
in later
paragraphs
for
additional
informa-
tion.
To
ensure
maximum
fuel
capacity when
refueling
and
minimize
cross-feecling
when
parked
on a sloping
surface,
place
the fuel
selector
valve
in
either LEFT
or
R,IGHT
position.
Service
the
fuel system
after
each flight,
and
keep fuel
tanks
full
to minimizo
condensation
in
the tanks.
FUEL
ADDITIVES
--
Strict adherence
to recommended
preflight
draining
instructions
as
called
for
in
Soction 4
will eliminate
any free water accumulations
from
the
tank sumps.
While
small amounts
of water
may still remain Ín
solution
in the
gasolìne,
it
will
normally be
consumed and
go
unno-
ticed in
the
operation
of the
engine.
One exception
to
this can
be encountered
when
operating under
the
combined
effect
of:
(1)
use of certain
fuels, with
(Z)
high humidity
conditions
on the
ground
(3)
followed
by flight
at high altitude and low
temperaturo,
Under
these
unusual
conditions, small
amounts of water
in
solution
can
precipitate
from
the
fuel stream
and freeze in sufficient
quantites
to induce
partial
icing
of
the engine fuel
system.
While
these
conditions
are
quite
rare
and will not
normally
pose
a
problem
to owners
and
operators,
they
do exist in
certain
areas
of the
world
and consequently
must
be dealt
with, when
encountered.
8-12
80
May
1980