WD-40 Original Formula Multi-Use Product – 1 Gallon Bulk Pack (4-Pack)

Bulk-ready original formula for large projects

WD-40 Original Formula has earned the trust of mechanics, homeowners, and professionals for more than five decades. The 1-gallon bulk pack brings the classic, versatile solution directly to your shop or home, delivering more product per purchase and fewer restocks. The familiar clear spray coats metal surfaces with a light, lubricating film and leaves a recognizable scent that signals a quick maintenance moment across workspaces, garages, and sheds.

Designed for practical versatility, this bulk option emphasizes value without sacrificing reliability. It shines in soaking and dipping tasks, where having ample product on hand helps you sustain momentum through long maintenance cycles. The gallon size also supports refilling spray bottles, enabling a tidy, refillable workflow that reduces trips to the store and minimizes waste.

With more than 50 years of field use, the original formula remains a staple for routine upkeep, rust prevention, and general lubrication. The formulation is designed for broad dispersion across moving parts, yet forms a light film that can be wiped away when a deeper clean is needed. This makes it a familiar first choice for tackling a wide range of everyday challenges.

Why bulk matters

• Bulk purchases save money over time and keep you ready for the next job
• Non-aerosol formula allows you to dissolve sticky residues without propellants
• The 1-gallon size is perfect for soaking or dipping and supports eco-friendly refills
• Provides a protective moisture-displacing barrier that can help slow rust on metal tools
• Use to loosen, restore, or lubricate moving parts such as gears and hinges

Practical, everyday uses

• Loosen sticky hinges, latches, and tool drawers for smoother operation
• Loosen rusted bolts and fittings and help gears turn with less effort
• Lubricate garage doors, bike chains, and shop machinery for quieter, more reliable performance
• Soak metal tools to help keep them rust-free between jobs

How to maximize the gallon

Keep a steady supply by refilling spray bottles, or use the full gallon for soaking chains, bearings, and metal parts that see heavy use. Always apply to a cool, dry surface and follow with proper safety practices. For larger workshops, this bulk option helps maintain momentum across multiple tasks without frequent reorders.