Cessna Skyhawk 172N Pilot Operating Handbook page 12

SECTION 1
CESSNA
GENERAL
MODEL 172N
Fuel Capacity:
Standard Tanks:
Total Capacity: 43 gallons.
Total Capacity Each Tank: 21.5 gallons.
Total Usable: 40 gallons.
Long Range Tanks:
Total Capacity: 54 gallons.
Total Capacity Each Tank: 27 gallons.
Total Usable: 50 gallons.
NOTE
To ensure maximum fuel capacity when refueling and
minimize cross-feeding when parked on a sloping surface,
place the fuel selector valve in either LEFT or RIGHT
position.
OIL
Oil Grade (Specification):
MIL-L-6082 Aviation Grade Straight Mineral Oil: Use to replenish
-su:{Sply during first 25 hours and at the first 25-hour oil change.
Continue to use until a total of 50 hours has accumulated or oil
consumption has stabilized.
NOTE
The airplane was delivered from the factory with a corro ­
sion preventive aircraft engine oil. This oil should be
drained after the first 25 hours of operation.
MIL-L-22851 Ashless Dispersant Oil: This oil must be used after first
50 hours or consumption has stabilized.
Recommended Viscosity for Temperature Range:
MIL-L-6082 Aviation Grade Straight Mineral Oil:
SAE 50 above 16°C (60°F).
SAE 40 between _1°C (30°F) and 32°C (90°F).
SAE 30 between -18°C (OOF) and 21°C (70°F).
SAE 20 below -12°C (10°F).
MIL-L-22851 Ashless Dispersant Oil:
SAE 40 or SAE 50 above 16°C (60°F).
SAE 40 between -1°C (30°F) and 32°C (90°F).
SAE 30 or SAE 40 between -18°C (O°F) and 21°C (70°F).
SAE 30 below -12°C (lOOF).
Oil Capacity:
Sump: 6 Quarts.
Total: 7 Quarts (if oil filter installed).
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1 July 1978