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Chevron Aero Oil Chevron U.S.A. Inc.
Conoco Aero S Continental Oil
Delta Avoil Delta Petroleum Co.
Exxon Aviation Oil EE Exxon Company, U.S.A.
Mobil Aero Oil Mobil Oil Company
Pennzoil Aircraft Engine Oil Pennzoil Company
Quaker State AD Aviation Engine Oil Quaker State Oil & Refining Co.
Red Ram Aviation Oil 20W-50 Red Ram Ltd. (Canada)
Sinclair Avoil Sinclair Oil Company
Texaco Aircraft Engine Oil – Premium AD Texaco Inc.
Total Aero DW 15W50 Total France
Turbonycoil 3570 NYCO S.A.
Union Aircraft Engine Oil HD Union Oil Company of California
Figure 8-1
Approved Oils
March 2010
8-22 Information Manual
Section 8 Cirrus Design
Handling, Servicing, Maintenance SR20
Fuel System Servicing
After the first 25 hours of operation, then every 50-hours or as
conditions dictate, the fuel filtration screen in the gascolator must be
cleaned. After cleaning, a small amount of grease applied to the
gascolator bowl gasket will facilitate reassembly.
Fuel Requirements
Aviation grade 100 LL (blue) or 100 (green) fuel is the minimum octane
approved for use in this airplane.
• Caution •
Use of lower grades can cause serious engine damage in a
short period. The engine warranty is invalidated by the use of
lower octane fuels.
Filling Fuel Tanks
Observe all safety precautions required when handling gasoline. Fuel
fillers are located on the forward slope of the wing. Each wing holds a
maximum of 30.3 U.S. gallons. When using less than the standard
60.5-gallon capacity, fuel should be distributed equally between each
side.
• WARNING •
Have a fire extinguisher available.
Ground fuel nozzle and fuel truck to airplane exhaust pipe and
ground fuel truck or cart to suitable earth ground.
Do not fill tank within 100 feet (30.5 meters) of any energized
electrical equipment capable of producing a spark.
Permit no smoking or open flame within 100 feet (30.5 meters)
of airplane or refuel vehicle.
Do not operate radios or electrical equipment during refuel
operations. Do not operate any electrical switches.
To refuel airplane:
1. Place fire extinguisher near fuel tank being filled.
March 2010
Information Manual 8-23
Cirrus Design Section 8
SR20 Handling, Servicing, Maintenance
2. Connect ground wire from refuel nozzle to airplane exhaust, from
airplane exhaust to fuel truck or cart, and from fuel truck or cart to
a suitable earth ground.
3. Place rubber protective cover over wing around fuel filler.
• Note •
Do not permit fuel nozzle to come in contact with bottom of
fuel tanks. Keep fuel tanks at least half full at all times to
minimize condensation and moisture accumulation in tanks. In
extremely humid areas, the fuel supply should be checked
frequently and drained of condensation to prevent possible
distribution problems.
4. Remove fuel filler cap and fuel airplane to desired level.
• Note •
If fuel is going to be added to only one tank, the tank being
serviced should be filled to the same level as the opposite
tank. This will aid in keeping fuel loads balanced.
5. Remove nozzle, install filler cap, and remove protective cover.
6. Repeat refuel procedure for opposite wing.
7. Remove ground wires.
8. Remove fire extinguisher.
March 2010
8-24 Information Manual
Section 8 Cirrus Design
Handling, Servicing, Maintenance SR20
Fuel Contamination and Sampling
Typically, fuel contamination results from foreign material such as
water, dirt, rust, and fungal or bacterial growth. Additionally, chemicals
and additives that are incompatible with fuel or fuel system
components are also a source of fuel contamination. To assure that
the proper grade of fuel is used and that contamination is not present,
the fuel must be sampled prior to each flight.
Each fuel system drain must be sampled by draining a cupful of fuel
into a clear sample cup. Fuel drains are provided for the fuel
gascolator, wing tanks, and collector tank drains. The gascolator drain
exits the lower engine cowl just forward of the firewall near the airplane
centerline. Fuel tank and collector tank drains are located at the low
spot in the respective tank.
If sampling reveals contamination, the gascolator and tank drains must
be sampled again repeatedly until all contamination is removed. It is
helpful to gently rock the wings and lower the tail slightly to move
contaminates to the drain points for sampling. If after repeated
samplings (three or more), evidence of significant contamination
remains, do not fly the airplane until a mechanic is consulted, the fuel
　
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