Description
WD-40 Multi-Use Liquid 20 Litres is the bulk-container version of the familiar aerosol product, built for professional users and workplaces where an individual can simply isn’t large enough for ongoing volume needs. Its core performance — penetrating stuck components, stopping squeaky hinges, loosening rusted parts, cleaning and protecting against corrosion — is unchanged from the standard aerosol, just supplied in a format suited to refilling smaller dispensers or bulk workshop use.
Being available in both 4 and 20 litre bulk sizes gives real flexibility to match container size to actual usage volume, avoiding both running out mid-job with a smaller pack and over-purchasing for lighter, occasional use. For a busy workshop, trade site or maintenance operation going through WD-40 regularly, buying bulk genuinely reduces cost per application compared with individual aerosol cans.
Buying WD-40 Multi-Use in a 20 litre bulk container makes real economic sense for a workshop or trade operation going through the product regularly, cutting down on packaging waste and the ongoing cost of individual aerosol cans while keeping exactly the same penetrating, lubricating and corrosion-protecting formula in liquid form. It suits refilling smaller trigger sprayers or dispensers for day-to-day use around a workshop, provided any refillable container is clearly labelled once the product has been decanted from bulk stock.
Whichever bulk size is chosen, the same core WD-40 formula applies: penetrating stuck components, freeing squeaky hinges, loosening rust and leaving behind corrosion protection, just delivered in a format suited to high-volume trade and workshop use rather than occasional household application.
Technical Specifications
| Format | Bulk liquid |
|---|---|
| Packaging | 20 litres (also available in 4 litres) |
Where to Use
- Removing rust from gardening tools, equipment and power tools
- Protecting battery terminals from corrosion
- Spark plug lubrication and maintenance
- Protecting bike frames and chains, lubricating door locks and hinges
- Cleaning greasy engines and exhaust grime
How to Apply
- Decant into a suitable dispenser — refill smaller reusable spray or trigger bottles from the bulk container.
- Apply to the target — spray or apply directly to the part needing lubrication, rust removal or cleaning.
- Allow it to work — give the product time to penetrate or lift contamination.
- Wipe away excess — remove loosened grime or rust residue as needed.
Important Notes
- Label refillable dispensers clearly when decanting from bulk stock.
- Store the bulk container away from heat sources and direct sunlight.
- Refer to the product’s Safety Data Sheet for full handling and hazard information.


