Storing WD-40 in the refrigerator is not necessary and not recommended. In fact, it's generally advised against doing so for several reasons:
Product performance: WD-40 is a multi-purpose lubricant and water-displacing spray. When stored in the refrigerator, the low temperatures can cause the product to thicken and become less effective. WD-40 is designed to work optimally at room temperature.
Aerosol cans: WD-40 is typically sold in aerosol cans. Aerosol cans are pressurized containers, and exposing them to extreme temperatures, such as those found in a refrigerator or freezer, can cause the can to become brittle and potentially rupture or leak.
Moisture condensation: When you take the WD-40 can out of the refrigerator and bring it back to room temperature, moisture can condense on the can's surface. This moisture can lead to corrosion and affect the can's integrity.
Limited benefits: Storing WD-40 in the refrigerator does not offer any significant advantages. The product has a long shelf life when stored in a cool, dry place at room temperature. Keeping it in a cabinet or toolshed away from direct sunlight and extreme heat is sufficient to maintain its quality.
To ensure the longevity and effectiveness of WD-40, store it in a cool, dry place at room temperature. Avoid exposing it to extreme heat or cold, and always follow the manufacturer's storage recommendations, which are typically mentioned on the product label.