TB 1-9150-200-24
Table 3-1.
Lubricating Oils, Turbine Engine Aircraft -- Continued
Fixed Wing Aircraft
Engine
Aircraft
Engine Oils
Transmission and Gear Oils
PT6A-67
MIL-PRF-23699
None
RC-12X
Thielert 1.7L HFE
0W-40
75W-90
MQ-1C
Thielert 2.0L HFE
Notes:
1
MIL-PRF-23699 oil, used in the engine oil system, is authorized and directed for use. DO NOT mix different
brands or types of oil when adding oil between changes. Different brands or types of oil may be incompatible
due to the differences in chemical structure.
NOTE
If there is a conlict between speciic aircraft manuals and this table, the aircraft manual takes prece-
dence.
Lubricating Oils, Reciprocating Engine Aircraft
Rotary Wing Aircraft
Alternate Fuel2
Emergency Fuel3
Engine
Aircraft
Army Standard
Fuel1
Notes:
1
This underlined fuel corresponds to that recommended by the engine manufacturer as most suitable for use
in a particular engine for maximum eficiency and longest engine life.
2
Refer to applicable operator s manuals for operating limitations when using this fuel.
3
Refer to applicable operator s manuals for operating limitations when using Emergency Fuels.
Fixed Wing Aircraft
Alternate Fuel2
Emergency Fuel3
Engine
Aircraft
Army Standard
Fuel1
Notes:
1
This underlined fuel corresponds to that recommended by the engine manufacturer as most suitable for use
in a particular engine for maximum eficiency and longest engine life.
2
Refer to applicable operator s manuals for operating limitations when using this fuel.
3
Refer to applicable operator s manuals for operating limitations when using Emergency Fuels.