Report Example - plastics

Notes

Summary

• Viscosity (cSt @40 °C): 46.4 → 49.3 (slight drop, still in VG46 spec, no concern) • Water (ppm): 26 → 22 (small rise, but still very low) • TAN (mgKOH/g): 0.38 → 0.54 (↓ ~30%, improved oil health) • PQ Index: 3 → 4 (slight drop, both very low) • ISO Code: 17/15/10 → unreadable (too dirty before) o 4 µm: 775/ml o 6 µm: 167/ml o 14 µm: 7/ml • Silicon: None detected • Wear metals: None detected (excellent) • Additives: o Calcium: 43 → 43 ppm (unchanged) o Phosphorus: 326 → 310 ppm (↑ ~5%) o Zinc: 382 → 367 ppm (↑ ~4%) → Indicates top-up with fresh AW hydraulic oil.

Interpretation

• Oil health: TAN dropped significantly, PQ is low, viscosity stable — very good condition. • Cleanliness: Huge improvement. First sample was “too dirty to count,” now it’s ISO 17/15/10 — extremely clean, right in line with best-practice targets for hydraulic systems. • Water: Still very low at 26 ppm, no concern. • Wear & contamination: Zero silicon and no metals — excellent, system is clean and no active wear evident. • Additives: Slight increase in P/Zn indicates a recent top-up; chemistry remains consistent.

Recommendations

1. ISO 17/15/10 is an excellent cleanliness level — Kleenoil is clearly doing its job. 2. Use this as the new baseline. Future samples should aim to stay ≤18/16/13, ideally 17/15/10 or better. 3. Confirm top-up practices. The rise in P/Zn is consistent with fresh oil addition. Ensure same grade/spec is being used to maintain additive balance. 4. Continue routine monitoring. No urgent issues. Next sample in 6 – 8 weeks should confirm stability.