To prevent corrosion during winter storage, nozzle tips and screens should be kept in a can of which substance?

• A. Clean water
• B. Pesticide rinsate
• C. Fine sawdust
• D. Light oil

Answer: (D)

Metal parts like nozzle tips and screens are prone to rust when stored in damp conditions. The aim is to leave a protective, water-repellent film on the metal so moisture can’t start the corrosion process. Light oil provides a thin, even coating that shields the metal from humidity and slows oxidation, helping prevent corrosion during winter storage. It also cleans up easily when you’re ready to reuse the parts and doesn’t leave behind sticky residues.

Other options don’t fit this protective purpose: clean water would introduce moisture and promote rust; pesticide rinsate would leave chemical residues that could cause compatibility issues with future uses; and fine sawdust might absorb and trap moisture or debris rather than protecting the metal.