# SDR 99ZZZX502

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N173QS
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280460
- System (JASC): [1220 · Oil Servicing](https://openairdocs.org/jasc/1220)
- Part: Oil
- Part number: 15W50
- Condition: Mismanufactured
- Location: Engine
- Part time: 297 hours
- Stage of operation: IN
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX502

## Discrepancy

DID ROUTINE OIL CHANGE AT 100-HOUR/ANNUAL INSPECTION.  ALL NORMAL UNTIL RUN-UP AT COMPLIANCE OF INSPECTION.  LOW OIL PRESSURE AT ALL POWER SETTINGS.  SPSI AT IDLE.  TROUBLESHOT SITUATION AND FOUND BAD OIL FROM 2 EACH 1-GALLON JUGS (WERE SEALED) FROM OIL INVENTORY.  DRAINED OIL.  REMOVED FILTER AND INSTALLED NEW OIL.  OPS CHECKED NORMAL.  SUBMITTER SUGGESTED GOOD RUN-UP/WARM-UP AND DOUBLE CHECK OIL PRESSURE.

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