MIL-PRF-87100A(USAF)
4.4.3.1 Reported data. Test results of all determinations shall be included in reporting data. The following shall
also be reported: (a) bearing stabilization temperature, (b) major item deposit demerits, and (c) major item colored
photographs.
TABLE II: Conformance tests.
Test
Test Method
FED-STD-791
Characteristic
Paragraph
ASTM
Trace metal content, ppm max
4.4.2
(see table I)
Corrosion and oxidation stability
4.4.5
FTM 5307
D4636
(see table I)
Refractive index at 25ºC(77ºF)
D1218
(see table I)
Gear load-carrying capacity at
3.4.2
D1947
74ºC(165ºF)
Flash point, °C (°F) (see table I)
D92
Pour point ºC(ºF) (see table I)
D97
Evaporation loss, at 260 °C
D972
(500 °F), % (see table I)
Acid number, mg KOH/g
D664
(see table I)
Specific gravity at 100ºF/60ºF
D1298
(see table I)
Viscosity (see table I), cSt
D445
at 98.9 °C (210 °F)
at 37.8 °C (100 °F)
Foam volume, ml (see table I)
D892
at 24ºC(75ºF)
at 93ºC(200ºF)
at 24ºC(after test at 93ºC)
after 10 minute settle period, ml
at 24ºC(75ºF)
at 93ºC(200ºF)
at 24ºC(after test at 93ºC)
Trace sediment, ml/200 ml of oil(max)
D2273
(see table I)
4.4.4 Compatibility. The compatibility test shall be performed in accordance with FED-STD-791, Method 3403.
The lubricating oil shall be mixable with selected referee lubricating oils qualified under this specification without
turbidity. Upon completion of the 168-hour oven period, the test flasks shall be stored in the dark, at a room
temperature of 25 °C +5 °C (77 °F +9 °F), for 21 days before visual inspection for turbidity and centrifuging.
Centrifuge tubes with a small scale division of 0.005 ml or less shall be used. (DeLaval centrifuge tube, part
14209, or equivalent, is acceptable.) The volume of sediment shall be determined in accordance with ASTM
D2273. The sediment shall be centrifuged from a 200 ml oil sample. The volume of sediment for mixtures which
involve oils covered under this specification shall not exceed 0.005 ml per 200 ml of oil.
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