A summary of the current grades as well as the previous fuel
designations are shown in the following chart:
FUEL GRADE COMPARISON CHART
Previous Con inertial
Kid Grades (AS UM-1)910)
Current Commercial
Fuel Grades (AS1'1114)910.75)
Current Military
Fuel Grades (MI ...G•5572E)
Amendment No. 3
Atax. TE1.
Mae.
TEL
Max. TEL
Grade
Color
in1/13.S. gal.
Grade
Cohn
in1/11.S. gal.
Grade
Color
m1/11.S. gal.
80/117
red
0.5
80
red
0.5
80/87
red
0.5
none
91/98
blue
2.0
•
1001.1
bloc
2.0
none
none
"3.0
1011/130
green
3.11
100
green
"3.0
1)81/1311
green
4./'
115/145
purple.
4.6
1111111.
n
oo
n
none
115/145
purple
•
Grad, 1001.1.
fuel in some over cas countrie is currently colored green
and
designated as "1001..
•
•- Commercial fuel grade 100 and grade 1181/I 0 (both of which arc colored green) having TEL content of
up to 4 ni1/0.S. gallon arc approved for use i tall engines certificated for use with grade 100/130 fuel.
OIL REQUIREMENTS
The oil capacity of the 0-320 series engine is 8 quarts, and the
minimum safe quantity is 2 quarts. The 0-540 holds 12 quarts and the
minimum safe quantity is 3 quarts. It is recommended that the oil be
changed every 50 hours and sooner under unfavorable operating
conditions. Intervals between oil changes can be increased as much as
100% on engines equipped with full flow cartridge type oil filters,
provided the element is replaced each 50 hours of operation and the
specified octane fuel is used. Should fuel other than the specified
octane rating for the power plant be used, refer to the latest issue of
Lycoming Service Letter No. L185 and Lycoming Service Instruction
No. 1014 for additional information and recommended service
procedures. The following grades are recommended for the specified
temperatures:
THE PIPER CHEROKEE
SECTION.
Average Ambient
Single
Air Temperature
Viscosity
For Starting
Grade
Above 60
°
F
SAE 50
30
°
to 90
°
F
SAE 40
0
°
to 70
°
F
SAE 30
Below 10
°
F
SAE 20
Multi-Viscosity
Grades
SAE 40 or SAE 50
SAE 40
SAE 40 or 20W-30
SAE 20W-30
S•ON V
THE PIPER CHEROKEE
When air bubbles cease to flow through the hose, compress the strut
fully and again check fluid level. Reinstall the valve core and filler plug,
and the main gear torque links, if disconnected.
With fluid in the strut housing at the correct level, attach a strut
pump to the air valve and with the airplane on the ground, inflate the
oleo strut to the correct height.
In jacking the Cherokee for landing gear or other service, a jack kit
(available through Piper Dealers or Distributors) should be used. This
kit consists of two hydraulic jacks and a tail stand. At least 250 pounds
of ballast should be placed on the base of the tail stand before jacking
up the airplane. The hydraulic jacks should be placed under the jack
points on the bottom of the wing and the airplane jacked up until the
tail skid is at the right height to attach the tail stand. After attaching
the tail stand, and adding the ballast, the jacking may be continued
until the aircraft is at' the height desired.
FUEL REQUIREMENTS
The minimum aviation grade fuel is 80/87 for the PA-28-150 and
91/96 for the PA-28-160 and 180. Since the use of lower grades can
cause serious engine damage in a short period of time, the engine
warranty is invalidated by the use of lower octanes.
Whenever 80/87 is not available, the lowest lead 100 grade should
be used. (See Fuel Grade Comparison Chart, next page.) Refer to the
latest issue of Lycoming Service Instruction No. 1070 for additional
information.
The continuous use, more than 25% of the operating time, of the
higher leaded fuels can result in increased engine deposits, both in the
combustion chambcrand in the engine oil. It may require increased
spark plug maintenance and more frequent oil changes. The frequency
of spark plug maintenance and oil drain periods will be governed by the
amount of lead per gallon and the type of operation. Operation at full
rich mixture requires more frequent maintenance periods; therefore, it
is important to use proper approved mixture leaning procedures.
Reference the latest issue of Lycoming Service Letter No. L185 for
care, operation and maintenance of the airplane when using the higher
leaded fuel.
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