engine fuel supply, consult
the
operating instructions
for
the
generator before deciding
on
a fuel type.
Fuel Fill
The fuel filler cap is located on the rear of the coach.
Modern fuel systems may build up vapor pressure
within
the tank
as
the
gasoline warms during use or
hot
weather. Under certain conditions, sudden release
of
this pressure
when
removing
the
gasoline cap can
spray gasoline from the fill opening, causing a possi-
ble hazard.
WARNING: WHEN REMOVING THE GASOLINE
CAP,
ROTATE
IT SLOWLY
ONLY
FAR
ENOUGH
TO
ALLOW
PRESSURE
TO
RELEASE.
AFTER
ANY
"HISSING"
SOUNDS
STOP,
COMPLETE THE
REMOVAL
OF
THE
CAP.
To
protect the gasoline system from excessive pressure
or vacuum, or from sudden release
of
pressure, replace
lost caps
with
caps
of
the
same design available from
your Fleetwood
motor
home dealer.
Clean up fuel spills immediately. Raw fuel spilled on
the
motor
home could damage the exterior finish, and
is a serious fire hazard.
Fuel Types
And
Vapor
Lock
Today's automotive fuel and emissions systems
are
sophisticated and highly engineered to meet Federal
and
state emissions standards. They
are
also sometimes
sensitive
to
fuel types and blends, particularly blends
that
are
optimized for climatic conditions. Fuel refiners
change the additives in the fuel
to
compensate for
temperature variations during winter or summer months.
This compensation changes the
"vapor
pressure"
of
the fuel. This means
that
the fuel vaporizes easier during
the winter than
it
does during the summer when higher
air temperatures help the fuel vaporize in
the
engine.
Since colder temperatures reduce the fuel's ability
to
vaporize and burn in your engine, additives help raise
the
volatility
of
the fuel. This helps
the
engine start
easier and run smoother during winter months. Under
the best
of
conditions, the refiners supply their gas sta-
tion customers
with
the correct fuel for their location
and seasonal conditions. Sometimes though, fuel blend-
ed for winter is supplied during summer months.
What
this all means is
that
there is a possibility
of
"vapor
lock"
during summer driving. This condition is
a combination
of
new
engine design
(with
attendant
higher temperatures under the hood), and excessive fuel
vaporization caused by the vapor pressure
of
the
fuel
you
are
using. If your engine and fuel system
are
pro-
perly tuned and maintained, you should
not
experience
vapor lock. If vapor lock occurs, the fuel itself could
be
the
cause. If
at
all possible, check
with
the gas sta-
tion attendant as
to
the fuel blend before filling your
fuel tank. If you purchase your fuel from nationally
recognized fuel dealers, your chances
of
vapor lock can
be reduced.
If
you store your
motor
home during the
winter
months, avoid storing large quantities
of
winter
blended fuel in the tank. When you take the vehicle
10
out
of
storage
in
the spring or summer, this fuel may
cause vapor lock until
it
is used
up.
Another note on long storage -
if
you plan
to
store
your motor home for a long period
in
conditions of wide-
ly varying humidity, consider topping
off
the
fuel tank.
This will reduce the buildup
of
condensation
in
the tank
that
could cause rough engine operation, fuel filter
blockage, or other problems associated
with
water in
the fuel.
NOTE: DURING EXTENDED PERIODS OF
STORAGE
(60
DAYS
OR
MORE), GASOLINE MAY
DETERIORATE
DUE
TO
OXIDATION. THIS CAN
DAMAGE
RUBBER
AND
OTHER
MATERIALS
IN
THE
FUEL
SYSTEM SUCH AS CARBURETOR AC-
CELERATOR
PUMp, DIAPHRAGMS,
AND
CAR-
BURETOR
INLET VALVES. IT MAY ALSO CLOG
SMALL ORIFICES.
A COMMERCIALLY AVAILABLE GASOLINE
FUEL
STABILIZER MAY
BE
ADDED
TO
GASOLlNE-
POWERED
VEHICLES WHENEVER ACTUAL
OR
EXPECTED
STORAGE
PERIODS
EXCEED
60
DAYS.
FOLLOW THE ADDITIVE MANUFACTURER'S IN-
STRUCTIONS.
OPERATE
THE
VEHICLE
REGULAR-
LY
DURING THE
STORAGE
PERIOD
TO
MIX
AND
CIRCULATE THE
ANTI-OXIDANT
AGENT
THROUGHOUT THE
FUEL
SYSTEM.
Alternative Fuel Types
Gasohol, a mixture
of
ethanol (grain alcohol), or
methanol and gasoline may
be
used in your motor home
engine
without
voiding the warranty. However,
DO
NOT
UNDER ANY CIRCUMSTANCES
USE
FUEL
BLENDS
CONTAINING MORE THAN
5%
METHANOL
OR
10%
ETHANOL, AND
DO
NOT
USE
BLENDS THAT CON-
TAIN
BOTH
METHANOL AND ETHANOL.
Any
fuel
blend you use containing alcohol
must
also contain
cosolvents and other additives to protect the fuel
system components. If you
are
not
sure
of
the
com-
position
of
the alcohol/gasoline blend you intend to
use,
ask your service station operator. Discontinue use
of
any alcohol/gasoline blend
if
driveability or fuel system
problems occur.
Chemical reactions between the fuel components and
the materials in
the
fuel lines can cause deterioration
of
the fuel lines during storage periods. These effects
are
especially noticeable
with
gasohol blends. If you
plan
to
use alcohol blended fuel, and expect
to
store
your motor home for periods
of
60
days or more, add
a fuel additive
that
is formulated to counteract these
oxidation effects.
Your
dealer can advise you on
the
proper additives and their
use.
If gasohol is spilled on a painted surface, some dull-
ing or softening
of
the paint may result.
Overheating .
Operate and service the engine and cooling systems
in your vehicle as recommended in
the
Chassis
Operator's Manual.
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