Liqui Moly Marine Gear Oil 80W-90 GL4 GL5 MT-1 20L 25034
OIL-LIQUIMOLY-GEAROIL-20L
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- 30 Day Return Policy
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LIQUI MOLY Marine Gear Oil GL4/GL5 80W-90 is a mineral-based high-performance lubricant for marine transmissions operating under normal to high loads. Its additive package helps minimise wear and running noise while providing corrosion protection and resistance to ageing.
Key Features
- Marine transmission oil for outboard, inboard and sterndrive applications
- SAE 80W-90 viscosity grade
- Meets API GL-4, GL-5 and MT-1 performance requirements
- High pressure-absorption capability
- Helps reduce wear and gear noise
- Large 20-litre workshop container
Technical Specs
| Brand | LIQUI MOLY |
|---|---|
| Product | Marine Gear Oil GL4/GL5 |
| Viscosity | SAE 80W-90 |
| Performance | API GL-4 / GL-5 / MT-1 |
| Base | Mineral-based selected base oils |
| Contents | 20 litres |
Compatibility / Fitment Guide
For marine gearboxes, outboard lower units, inboard transmissions and Z-drives that specifically require SAE 80W-90 oil meeting the stated API performance level. Do not select oil by engine brand alone; check the drive or gearbox manual because some units require a different viscosity, formulation or manufacturer-approved lubricant.
Part Number Cross Reference
- LIQUI MOLY article number: 25034
- 4Boats SKU: OIL-LIQUIMOLY-GEAROIL-20L
- Specification reference: SAE 80W-90, API GL-4 / GL-5 / MT-1
Frequently Asked Questions
Can this be used in any outboard lower unit?
No. Use it only when the manufacturer specifies a compatible SAE 80W-90 GL-4/GL-5 oil.
Is this the 75W-90 fully synthetic product?
No. This listing is for the mineral-based SAE 80W-90 product.
How much oil is supplied?
One 20-litre container is supplied. Check the drive capacity and filling procedure before service.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.