Above: An Aluminium particle, approx. 70 µm in length, which appears to have been in the process of separating into smaller particles.
Info Centre >> Fuel and Lube Oil Technical Manual >> 7. Lube Oil - Test Results >> 7.8 Spectrochemical Oil Analysis >> 7.8.4 Aluminium and Alloys
All components:
Aluminium oxides present in the environment, typically associated with silicon (dirt) contamination.
Reciprocating engine:
Pistons; bearings; bushing; blocks; main and accessory cases and housings; some oil cooler tubing.
Turbine engine:
Main and accessory case, housing; some retainers; seals; baffles.
Transmission:
Some cases; bushing and retainers.
Torque converter:
Impellers.
Differential:
Bushing and thrust washers.
Final drive/reduction gearbox:
Bushing and thrust washers.
Hydraulic:
Some pump housings.
Compressors:
Case; impellers, some pistons and crossheads; retainers.