The Lubricating Oil,engine, cataloged under National Stock Number 9150-01-421-1427, is classified within Federal Supply Class 9150 (Oils and Greases: Cutting, Lubricating, and Hydraulic) of the Fuels, Lubricants, Oils, and Waxes group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9150-01-421-1427 |
| Item Name | Lubricating Oil,engine |
| FSC / FSG | 9150 / 91 — Oils and Greases: Cutting, Lubricating, and Hydraulic |
| Status | ACTIVE |
| Maximum Pour Point | -23.0 CELSIUS DEGC |
| Supplementary Features | API ENGINE SERVICE CLASSIFICATION CD+CD II, RE-REFINED |
| Fatty Material Type | ANY ACCEPTABLE |
| Minimum Flash Point and Test Method | 215.0 CELSIUS CLEVELAND OPEN CUP DEGC |
| Nondefinitive Spec/std Data | 15W-40 GRADE W |
| Viscosity at Rated Temp | 12.50 MINIMUM 100 DEG CELSIUS AND 16.30 MAXIMUM 100 DEG CELSIUS |
| Environmental Attribute Code | COMPREHENSIVE PROCUREMENT GUIDELINE - VEHICULAR PRODUCTS - RE-REFINED LUBRICATING OILS |
| Service Characteristics | ANTIFOAM AND ANTIWEAR AND CORROSION RESISTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 15W-40/QT/BT/2104 | 5/1 Secondary reference Dla Aviation Engineering Div Department of Defense |
| MIL-L-2104 | 5/9 Secondary reference U.S. Government activity |
| MIL-PRF-2104 | 4/1 Identification reference U.S. Government activity |
NSN 9150-01-421-1427 is a Lubricating Oil,engine, classified under FSC 9150, Oils and Greases: Cutting, Lubricating, and Hydraulic. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 9150-01-438-6076, 9150-01-542-9479. Verify interchangeability with system specifications before substitution.
Key specifications for 9150-01-421-1427: Maximum Pour Point: -23.0 CELSIUS DEGC; Supplementary Features: API ENGINE SERVICE CLASSIFICATION CD+CD II, RE-REFINED; Fatty Material Type: ANY ACCEPTABLE; Minimum Flash Point and Test Method: 215.0 CELSIUS CLEVELAND OPEN CUP DEGC. 8 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.