Mobil Vacuoline 528 208L
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Mobil VACUOLINE 528
Circulating oil
Applications Mobil Vacuoline 528
Mobil Vacuoline 528 is intended for circulation lubrication and is an excellent choice for maritime moderate-duty spur, command, helical and herringbone gearboxes, as well as circulation systems. The oil is primarily intended for lubrication of plain bearings, roller bearings, parallel axles and conical gear transmissions and for systems with splash, bath and ring oil lubrication, and other methods involving pumps, valves and auxiliary equipment.
Mobil Vacuoline 528 – specifications, recommendations and analysis
Approvals & recommendations
- Recommended for marine moderate-duty gearboxes: spur, bevel, helical and herringbone gears.
- Suitable for circulation systems and applications with splash, bath and ring oil lubrication, as well as other systems with pumps, valves and auxiliary equipment.
- Particularly effective in marine hydraulic systems with gear, vane, radial and axial piston pumps where higher-viscosity anti-wear hydraulic fluids are required.
Specifications
- ISO viscosity grade: 150
- Product type: Heavy-duty circulating oil (Mobil Vacuoline 500 Series)
- Designed for: water separation, protection of critical bearings and gears, rust and corrosion protection, and resistance to oxidation and thermal degradation.
Performance, features & benefits
Water separation for stable operation
Mobil Vacuoline 528 (Mobil Vacuoline 500 Series) offers excellent water separation, allowing water and other contaminants to readily separate from the oil in the system reservoir. This supports smooth and efficient operation, reduces downtime, and helps maintain wear protection.
Excellent protection of bearings and gears
The balanced formulation is designed to provide excellent protection for critical bearings and gears. Combined with resistance to oxidation and thermal degradation, this helps protect components against wear, potentially reducing unplanned shutdowns and lowering maintenance costs.
Rust and corrosion protection
Formulated with high-quality base oils and an additive system that supports superior wettability, enhanced oil retention, and thin-film protection against rust and corrosion.
Long oil life & potential cost savings
Mobil Vacuoline 500 Series oils can provide long oil life (with potential savings on disposal costs) and lower overall maintenance costs. In addition, suitability for multiple applications may help reduce inventory and operational expenses.
Typical analysis
| Property | Unit | Method | Value |
|---|---|---|---|
| ISO viscosity grade | - | - | 150 |
| Kinematic viscosity @40 °C | mm²/s | ASTM D445 | 146 |
| Kinematic viscosity @100 °C | mm²/s | ASTM D445 | 14.4 |
| Viscosity index (VI) | - | ASTM D2270 | 96 |
| Pour point | °C | ASTM D97 | -21 |
| Flash point | °C | ASTM D92 | 272 |
| Density @15.6 °C | kg/l | ASTM D1298 | 0.89 |
| Demulsibility @82 °C (time to 3 ml) | min | ASTM D1401 | 10 |
| Demulsibility (non-EP) – water | ml | ASTM D2711 | 38 |
| Rust protection – distilled water | - | ASTM D665 | Pass |
| Rust protection – seawater | - | ASTM D665 | Pass |
| Foaming characteristics Seq I (tendency/stability) | ml/ml | ASTM D892 | 5/0 |
| Foaming characteristics Seq II (tendency/stability) | ml/ml | ASTM D892 | 0/0 |
| Foaming characteristics Seq III (tendency/stability) | ml/ml | ASTM D892 | 0/0 |
| Copper corrosion (3 h @100 °C) | - | ASTM D130 | 1A |
| FZG gear test (failure stage) | - | DIN 51354 | 12 |
Frequently asked questions (FAQ)
What is Mobil Vacuoline 528 primarily intended for?
Mobil Vacuoline 528 is intended as a heavy-duty circulating oil for marine moderate-duty spur, bevel, helical and herringbone gearboxes and circulation systems, including applications with splash, bath and ring oil lubrication.
Does Mobil Vacuoline 528 help with water contamination in the system?
Yes. The oil provides excellent water separation, allowing water and other contaminants to separate more easily from the oil in the reservoir, supporting operational reliability and efficiency.
What key benefits are highlighted in the Mobil Vacuoline 500 Series factsheet (including 528)?
The factsheet highlights long oil life, potential lower maintenance costs, smooth and efficient operation, and reduced downtime through protection against rust/corrosion and resistance to oxidation and thermal degradation.
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