WD-40 Multi-Use Original Formula Wide-Area Spray, 18 oz Big-Blast 6-Pack — Rust Loosening & Moisture Displacement

WD-40 Original Formula Big-Blast is a multi-use maintenance spray with a wide-area nozzle that quickly displaces moisture, loosens rusted parts, lubricates moving components, and protects metal from corrosion.

Designed for projects that need coverage fast, the Big-Blast 18 oz can combines the classic WD-40 formula with a broad spray pattern so you can treat large surfaces and hard-to-reach areas without repositioning a straw. It works on engines, lawn equipment, tools and outdoor gear to reduce friction, repel water, and help free stuck components while leaving a protective film to slow further corrosion. This six-pack keeps extra cans on hand for routine upkeep or seasonal maintenance around the home, farm, or job site.

How will this make outdoor equipment easier to maintain?

The wide-area spray lets you coat blades, housings, and exposed fasteners quickly, cutting the time needed for preventative care. The product lifts grime so you can wipe it away, while its lubricating properties let moving parts operate more smoothly between services.

• Fast spray covers mower decks, shovel blades, and wheel hubs evenly
• Loosens rusted bolts and frozen linkages for easier disassembly
• Leaves a thin protective layer to reduce future rust formation

Can the Big-Blast be used on vehicles and engines safely?

Yes — it can be used to displace moisture on electrical components and to free sticky mechanisms on engines and small equipment, but avoid direct contact with hot engine parts or areas specified by your vehicle’s manufacturer. Use the spray for non-pressurized electrical connections and exterior moving parts to displace water and restore contact or movement.

• Dries damp connectors and reduces intermittent electrical faults
• Frees seized linkages, cables, and throttle components
• Helpful for cleaning and lubricating exterior engine mounts and brackets

What surfaces and materials are appropriate for treatment?

WD-40 Original Formula is formulated for metal surfaces and many types of hardware; it also helps remove sticky residues from non-porous surfaces. Test on painted or delicate finishes in a small area first to ensure compatibility, and avoid prolonged exposure to plastics or fabrics that are not rated for solvents.

• Ideal for metal gears, chains, hinges, and fasteners
• Removes tar, sap, adhesive and similar residues from hard surfaces
• Not recommended for untreated leather, certain plastics, or fabric without testing

How should I use the wide-area nozzle for best results?

Hold the can a moderate distance from the target and sweep across the area to create an even coat; use short bursts rather than continuous spraying to control coverage. For tight spots, you can use the standard straw accessory on other WD-40 cans, but the Big-Blast is best for large panels, mower decks, and accessible assemblies.

• Use sweeping motions for even coverage on large surfaces
• Target stubborn rust or stuck parts with brief, focused bursts
• Wipe excess residue after treatment for a cleaner finish

Who is this for? The WD-40 Original Formula Big-Blast 18 oz (6-pack) is built for homeowners, landscapers, mechanics, farmers, and anyone responsible for outdoor tools or large equipment who needs quick, broad coverage during maintenance. It’s useful for seasonal tune-ups, workshop tasks, and emergency fixes where moisture displacement, lubrication, or residue removal is required. Keep a few cans in the garage, workshop, or equipment shed to tackle corrosion prevention, freeing stuck parts, and general cleaning with less fuss and faster area coverage than a precision straw alone.