Bottle of gear oil with a red cap on a white background

Liqui Moly Marine Gear Oil 80W-90 GL4 GL5 MT-1 1L 25068

OIL-LIQUIMOLY-GEAROIL-1L

  • Dispatched in 2-3 days
  • 30 Day Return Policy
  • Low stock - 4 items left
  • Backordered, shipping soon
Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

Regular price£19.80
/
Tax included.

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. It helps minimise wear and running noise while providing corrosion protection and resistance to ageing.

Key Features

  • For compatible outboard, inboard and sterndrive gearcases
  • SAE 80W-90 viscosity grade
  • Meets API GL-4, GL-5 and MT-1 performance requirements
  • High pressure-absorption capability
  • Helps reduce wear and transmission noise
  • Practical 1-litre 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 1 litre

Compatibility / Fitment Guide

For marine gearboxes, outboard lower units, inboard transmissions and Z-drives that specify SAE 80W-90 oil meeting the stated API performance level. Check the drive manual before purchase: oil requirements can differ even between drives fitted to the same engine brand.

Part Number Cross Reference

  • LIQUI MOLY article number on this listing: 25068
  • Alternative market / label reference may be 25069
  • 4Boats SKU: OIL-LIQUIMOLY-GEAROIL-1L
  • Specification reference: SAE 80W-90, API GL-4 / GL-5 / MT-1

Frequently Asked Questions

Can this be used in every outboard gearbox?

No. Use it only where the manufacturer specifies a compatible SAE 80W-90 GL-4/GL-5 lubricant.

Is this fully synthetic 75W-90?

No. This is the mineral-based SAE 80W-90 product.

Is one litre enough?

Capacity varies by drive. Check the service manual and allow for the correct filling and draining procedure.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

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