Hydraulic Oil ISO 22 Marine Steering Trim Tilt Fluid
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Hydraulic Oil ISO 22
Marine Grade Steering & Power Trim Fluid
This ISO 22 Hydraulic Oil is a premium-quality mineral-based fluid specifically engineered to provide superior protection for marine hydraulic systems. Formulated with advanced anti-wear, anti-oxidant, and anti-foam additives, it ensures smooth operation of steering helms and power trim units even under high-pressure conditions.
Key Features
- β High Resistance to Oxidation
- β Excellent Anti-Foam Properties
- β Safe for Yellow Metals (Brass/Bronze)
- β Superior Low-Temperature Fluidity
Technical Specs
| Viscosity @ 40Β°C | 22.0 cSt |
| Viscosity @ 100Β°C | 4.3 cSt |
| Viscosity Index | 100 |
| Flash Point (COC) | 165Β°C |
| Pour Point | -25Β°C |
| Standards | DIN 51524 Part 2 |
Compatibility / Fitment Guide
| System Type | Common Brands | Application Notes |
|---|---|---|
| Hydraulic Steering | SeaStar, BayStar, Hynautic | Suitable alternative to HA5430 fluid. |
| Power Trim & Tilt | Yamaha, Mercury, Suzuki, Tohatsu | Ideal for outboard trim/tilt pumps. |
| Hydraulic Lifts | Bob's Machine, Panther | Used in hydraulic jack plates. |
| Trim Tabs | Bennett Marine | Compatible with hydraulic tab actuators. |
OEM Cross Reference
| SeaStar / Dometic | HA5430 / HA5430H / HA5440 |
| Shell | Tellus S2 M 22 / Tellus 22 |
| Mobil | DTE 22 / Velocite No. 10 |
| Castrol | Hyspin AWS 22 |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement fluid, manufactured to meet or exceed ISO VG 22 standards for marine hydraulic performance.
How do I know if it is compatible?
We recommend checking your owner's manual. If it specifies ISO 22, VG 22, or mentions SeaStar/BayStar compatibility, this oil is a guaranteed fit.
Can I mix this with my existing red steering fluid?
While ISO 22 is functionally compatible with many red fluids (like MIL-H-5606), we always recommend a full system flush for optimal performance and to ensure the additive packages remain effective.
Note: 4boats.co.uk recommends verifying your equipment requirements against the specifications above before purchase.
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