WD-40 literally stands for Water Displacement, 40th formula. That’s the name straight out of the lab book used by the chemist who developed the product back in 1953. The chemist, Norm Larsen, was attempting to concoct a formula to prevent corrosion—a task which is done by displacing water. Norm’s persistence paid off when he perfected the formula on his 40th try.


What does WD-40 stand for?

What does WD-40 Multi-Use-Product do?


LUBRICATES: The product’s lubricating ingredients are widely dispersed and tenaciously held to all moving parts.

PENETRATES: WD-40 Multi-Use Product loosens rust-to-metal bonds and frees stuck, frozen or rusted metal parts.

PROTECTS: The product protects metal surfaces with corrosion-resistant ingredients to shield against moisture and other corrosive elements.

REMOVES: WD-40 Multi-Use Product gets under dirt, grime and grease. Use it to remove gunk from tools, equipment and vehicles. WD-40 Multi-Use Product in liquid form (e.g., gallon) also dissolves adhesives, allowing easy removal of excess bonding material.

DISPLACES MOISTURE: Because it displaces moisture, WD-40® Multi-Use Product quickly dries out electrical systems to eliminate moisture-induced short circuits.

What does WD-40 Multi-Use-Product contain?

WD-40 Multi-use product is a versatile solution for use at home, garage or factory. It is a complex blend of lubricating oils, performance additives, surfactants and solvents, combined to deliver lubrication, penetration, water displacement, cleaning and corrosion protection on various metal surfaces. We can’t really tell you what’s inside as this is our best kept secret, however, we can tell you what it does not contain. WD-40 does not contain fish oil. It doesn’t contain any carcinogens, teratogens or mutagens. It doesn’t contain any heavy metals. It doesn’t contain any substances covered by SVHC (Substances of Very High Concern). It also doesn’t contain any silicone and WD-40 is acid free. It does contain CO2 propellant (instead of LPG) therefore you get more product in each can.

What is the shelf life for WD-40 Multi-Use-Products?

WD-40 is a product of persistent nature which is designed and manufactured to a high degree of specifications. The product should continue to perform as expected for an almost indefinite period of time. However, actual performance is affected by the longevity of mechanical items such as the valve assembly on aerosol cans. As such, the shelf life is considered to be 5 years from the date of production; however, product will often dispense and perform as expected for considerably longer. WD-40 should be stored between 4 degrees centigrade and 54 degrees centigrade, and always shaken before use.