Aston Martin DB 9 2010 Manual page 254

7. Once a month:
1] Disconnect the battery conditioner (if installed)
2] Start and run the engine until it is fully warmed up
3] Check there are no fluid leaks
4] Set the ignition to OFF
5] Connect the Battery Conditioner
6] Check and correct tire pressures if necessary
When returning the vehicle to normal service, set the tire pressures
to normal specification before driving on the road.
11.48
Extended Storage
For storage periods exceeding six months the following measures are
recommended;
Do Not Drain Fuel System.
1. Run the engine until there is as small a quantity of fuel in the
tank as is practical for storage purposes.
2. Add engine oil to the remaining fuel in the tank to make a
concentration of 2% (i.e. 3 fl/oz per 2 pints of fuel), then run
engine for not less than ten minutes to circulate mixture
thoroughly through the entire fuel system.
3. Inspect rubber connections of coolant system and have them
renewed if necessary.
4. Wash the vehicle bodywork thoroughly and repair any paint
blisters or patches of corrosion in order to prevent any further
deterioration. Apply a suitable polish.
5. Clean the carpets and upholstery thoroughly. Treat all leather
upholstery with an application of a leather conditioner or
preservative.
6. If the storage building is dry leave vehicle windows slightly open.
If there is any tendency towards dampness close vehicle doors
and windows and place an anti-moisture compound such as
Silica desiccant bags in an open metal container inside vehicle.
7. Cover vehicle with a cotton or fabric cover.
Re-commissioning after Storage
Provided that the vehicle has been stored in accordance with the
recommended procedure, the following points only should require
attention before using your vehicle on the road.
1. Check the tire pressures, inflate if necessary, lower the vehicle
to ground.