12 Storage Preparation Steps for Vehicles Sitting Longer Than 30 Days
7. Step 7 - Exhaust System and Emission Control Protection
The exhaust system and emission control components require specific attention during storage preparation to prevent moisture accumulation, corrosion, and damage to expensive catalytic converters and oxygen sensors. Start by ensuring the exhaust system is completely dry by running the engine to full operating temperature before storage, which evaporates any moisture that may have accumulated in the exhaust pipes and muffler. Inspect the entire exhaust system for signs of damage, loose connections, or excessive corrosion that could worsen during storage, addressing any issues before the storage period begins. For vehicles stored in humid environments or areas prone to temperature fluctuations, consider inserting steel wool or a similar breathable material into the exhaust pipe opening to prevent small animals from nesting while still allowing air circulation to prevent moisture buildup. However, be absolutely certain to remove any blockages before starting the engine after storage. The emission control system, including the PCV valve and associated hoses, should be inspected for proper operation and replaced if necessary, as a malfunctioning PCV system can allow moisture and contaminants to accumulate in the engine during storage. Modern vehicles with complex emission systems benefit from having all diagnostic trouble codes cleared before storage and documented for comparison after the storage period. Consider placing a note on the dashboard reminding yourself to check for any exhaust blockages before starting the vehicle after storage.
8. Step 8 - Interior Protection and Climate Control
Protecting the vehicle's interior during extended storage involves managing moisture, preventing pest intrusion, and maintaining material integrity to ensure a comfortable and safe environment upon return to service. Begin by thoroughly cleaning and conditioning all interior surfaces, paying special attention to leather seats, dashboard components, and plastic trim pieces that can crack or fade during storage. Use appropriate protectants for different materials—leather conditioner for seats, UV protectant for plastic and vinyl surfaces, and fabric protector for cloth upholstery. Remove all personal items, food, and organic materials that could attract pests or develop mold and mildew in humid conditions. Place moisture-absorbing products such as desiccant packets, activated charcoal, or commercial moisture absorbers throughout the interior to prevent condensation and humidity-related damage. For vehicles stored in areas with extreme temperature variations, consider using breathable car covers or leaving windows slightly cracked (if security permits) to allow air circulation while preventing moisture buildup. Disconnect or remove any aftermarket electronics that might draw power during storage, and consider placing cedar blocks or other natural pest deterrents in the interior to discourage rodent intrusion. If the vehicle has a sunroof, ensure it's properly closed and sealed, and check that all window seals are intact to prevent water intrusion during storage.