Penetrating Oil / Water Displacer / DW-40
6003-5
- Dispatched in 2-3 days
- 30 Day Return Policy
- In stock, ready to ship
- Backordered, shipping soon
DW-40 Penetrating Oil & Water Displacer
Professional Grade Marine & Automotive Maintenance
DW-40 is a high-performance, solvent-based penetrating oil specifically engineered to tackle the harshest marine and industrial environments. This multi-action formula works by rapidly migrating into tight threads and crevices to break the bonds of rust and corrosion, while simultaneously displacing moisture to prevent electrical shorts and further oxidation.
Key Features
- ✔ Superior Penetration: Frees seized bolts, nuts, and mechanisms.
- ✔ Water Displacement: Removes moisture from ignition systems and electronics.
- ✔ Rust Prevention: Leaves a protective anti-corrosive barrier.
- ✔ Cleaning Action: Dissolves grease, grime, and adhesive residues.
Technical Specs
| Base Type: | Mineral Oil / Hydrocarbon |
| Appearance: | Light Amber Liquid |
| Specific Gravity: | ~0.779 g/ml |
| Flash Point: | ~40°C (Closed Cup) |
| Solubility: | Insoluble in Water |
Compatibility / Fitment Guide
| Application | Recommended Use | Notes |
|---|---|---|
| Marine Engines | Outboards, Stern Drives | Protects against saltwater salt-crystal buildup. |
| Electrical | Terminals, Spark Plugs | Displaces moisture to prevent short circuits. |
| Hardware | Hinges, Locks, Cables | Lubricates and frees seized mechanisms. |
| Trailer Gear | Wheel Hubs, Winches | Critical for trailers exposed to marine conditions. |
OEM Cross Reference
| WD-40 | Multi-Use Product / Specialist Penetrant |
| CRC | 6-56 Marine / Power Lube |
| Silverhook | DW-40 Lubricant |
| Westway Oils | DW-40 Penetrating Fluid |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket DW-40 formulation, manufactured to match the performance and water-displacement characteristics of industry-standard multi-purpose lubricants.
How do I know if it is compatible?
DW-40 is safe for use on most metals, plastics, and rubbers. It is a universal maintenance product used across marine, automotive, and household applications.
Can this be used on boat electronics?
Yes, it is specifically designed to displace moisture from electrical contacts, battery terminals, and ignition components to prevent corrosion and ensure reliable starting in damp conditions.
Note: Ensure surfaces are clean for maximum penetration. Always test on a small inconspicuous area when using on sensitive plastics or vintage finishes.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
