Is this four 1-gallon cans or one 5-gallon pail?

The listing is a case of four 1-gallon cans. The description also mentions a 5-gallon pail, so confirm the format with the store before ordering.

Can I use WD-40 on plastic and rubber?

WD-40 says it has none to negligible effect on most plastics, rubber, Teflon and common metals. Test on painted or clear-coated surfaces first.

Is WD-40 a good long-term lubricant?

It is a light lubricant and penetrant. For bearings, gears and high-load parts, use grease or a dedicated lubricant and keep WD-40 for freeing and protecting.

How should I apply it from a gallon can?

Pour into a spray bottle or use a pump sprayer. Aerosol cans are easier for overhead or tight work.

When is the price lowest?

Bulk cases tend to dip during shop-supply sales and seasonal promotions. Compare the per-gallon price across stores before buying.

Where is the WD-40 - Case of 4 (1 Gallon) cheapest?

At WurthTool.com, for $47.05, as of our latest check.

Where can I buy the WD-40 - Case of 4 (1 Gallon)?

2 stores we checked sell it, including WurthTool.com, Keller-Heartt.

WD-40 - Case of 4 (1 Gallon)

Best price now

$47.05at WurthTool.comObserved at 9:58 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the WD-40 - Case of 4 (1 Gallon)

This is a case of four 1-gallon cans of standard WD-40, the multi-purpose penetrating oil and lubricant. It frees stuck bolts, displaces moisture, cleans grease and light rust, and protects bare metal from corrosion. At $47.05 for four gallons at WurthTool.com as of November 6, 2026, it is priced for shops and heavy users rather than a single household.