MIL-PRF-46167D
Table III. Finished oil property test methods Continued.
Test methods
FED-STD-791
Property
or equivalent (see 4.3.1)
ASTM
Sulfur
D2622, D4951
Nitrogen
D3228, D4629
Boiling range distribution
D2887
Sulfated ash
D874
Metallic components
D4628, D4927, D4951
1/ ASTM D808 is the preferred method.
4.3.3.2 Foaming test. All grades of oil shall be subject to the following tests and shall
exhibit the correlative results:
a. Initial test. Test oil in accordance with sequence I of ASTM D892. Not more
than 10 milliliters (mL) of foam shall remain immediately following the end of
the 5 minute blowing period. No foam shall remain at the end of the 10 minute
settling period.
b. Intermediate test. Test oil in accordance with sequence II of ASTM D892. Not
more than 20 mL of foam shall remain immediately following the end of the 5
minute blowing period. No foam shall remain at the end of the 10 minute settling
period. Option A is not allowed.
c. Final test. Repeat procedures under initial test, sequence III of ASTM D892.
d. Engine Oil Aeration Test. Test Oil in accordance with ASTM D6894. No more
than a 10% increase in aerated oil volume shall be present after a 30 minute
settling period.
4.3.3.3 Oxidation and wear protection test. The oil shall be tested in accordance with
ASTM D6984, Appendix X1 (Seq. IIIFHD Test Procedure) and shall exhibit results (single or
average) meeting the following criteria:
60 h viscosity at 40oC, increase from
2 Tests
3 Tests
1 Test
10 min sample, % max
325
349
360
4.3.3.4 Rolling valvetrain wear test. The oil shall be tested in accordance with ASTM
D5966 and shall exhibit results meeting the following criteria:
1 Test
2 Tests
3 Tests
Pin wear, µm avg. max.
11.4
12.4
12.7
mils, avg. max.
0.45
0.49
0.50
4.3.3.5 Ring-sticking, wear, and accumulation of deposits tests. Test oil as specified in
4.3.3.5.1 through 4.3.3.5.3.
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