Store it with a full tank of gas. But before you fill it up, add some gas stabilizer to the tank just prior. You'll want to drive at least 10 minutes after this to insure the stabilizer is all through the fuel system.
Completely drain the coolant system and put in fresh antifreeze with at least -20 freezing point. Don't forget to put some antifreeze in your windshield washer fluid holder as well.
Change the oil & filter. This will give the internal engine maximum rust and corrosion protection.
Brake fluid - if more than two years old (or dark honey colored): flush it & refill with new fluid. This should be done every spring. Silicone brake fluid is recommended..
Transmission and Differential should be topped up, it will displace any moisture.
WD40 (or equivalent) sprayed on all the hinges (hood, doors, trunk, etc.) will also help.
Wash and wax your vehicle just before storing it.
Clean the interior, dress all vinyl and rubber.
Store your vehicle in a dry place.
Put the top up and leave the windows down about 1/2" down to allow air to circulate in the interior.
Jacking the car up will remove the weight from the springs and prevent flat spots on the tires (more common on older bias ply). Spray the rubber bushings with a good quality spray to prevent rot.
If you cover your vehicle use only soft cotton or comparable materials that breathe and allow air circulation.
Descant is a good absorber of moisture. Go to a hardware store and get 3 or 4 bags of descant. Put a couple of bags in the interior of the vehicle and 1 or 2 in the trunk. This will help minimize condensation & rust.
Disconnect the battery while the vehicle is in storage. (You'll need to put you battery on a trickle charger like the Optimate Battery Charger.)
Place a rag/steel wool in the exhaust and air intake to keep moisture and small animals out.
Do not start your engine for short periods. This causes condensation and promotes rust.
Leave it in Neutral/park, hand brake off. In humid environments there can be a problem of the clutch disc becoming stuck to the flywheel and pressure plate. A wood dowel cut to the right length could be wedged between the clutch pedal and drivers seat to keep the clutch depressed.
Place a vapor barrier between your vehicle and the floor of the building where your vehicle is stored. The vapor barrier will help keep the moisture away from the under carriage of your vehicle. I also place plywood under each of my tires as the concrete is not the best for tires.
INSURANCE: Keep your comprehensive insurance paid up, but you may qualify for a discount when the vehicle is "stored" Just remember to reactivate PRIOR to the first spring drive.
If you have to store your vehicle outdoors, use caution about heavy tarps. Moisture trapped underneath them have lead to "bleached" spots in the paint. Also the wind whipping the tarp will tend to dull the paint as any dust between the tarp and paint will act as fine sand paper would.
Oil breaks down over time so when you get your vehicle out of storage run the engine for a short time and change the oil & filter again.
I usually take some "rust check" and go over all the seems and weld spots of the car.
I then place several moth balls in containers around the undercarriage.
Post lots of pics around the house and garage and dream of warm weather!
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