Aston Martin DB 9 2010 Manual page 216

Windshield Wash Fluid Level
Top up as required. In winter, to prevent the
windshield wash fluid freezing, increase the fluid
concentration (refer to the manufacturers
recommendations on the windshield wash fluid
container).
When the level of windshield wash fluid is low an information
message will show in the message centre (right) and the amber
warning symbol will come ON.
State or local regulations may restrict the use of volatile organic
compounds (VOCs), which are commonly used as anti-freeze
agents in windshield washer fluid. A windshield washer fluid with
limited VOC content should be used only if it provides adequate
freeze resistance for all regions and climates in which the vehicle
will be operated.
11.10
Windshield Washer Jets
Washer jet housings are located on the rear edge of the hood. Each
housing contains two washer jets.
windshield washer jets are set during manufacture and should not
need adjustment. However, if adjustment is required, adjust up or
down so that the fluid strikes between a third and half way up the
windshield.
Engine Oil Level
Warning: Engine oil and components may be hot and could
cause severe burns.
Running the engine with engine oil below the lower mark or
above the upper mark can cause serious engine damage.
This vehicle's warranty may be invalidated if damage is caused
by the use of improper engine oil. Low quality or obsolete oils do
NOT provide the protection required by modern, high
performance engines.
Failure to use engine oil that meets the required specification
(Refer to 'Fluids', page 12.12) could cause excessive engine wear,
a build up of sludge and deposits, and increased pollution. It
could also lead to engine failure.
• The vehicle should be on level ground
• Check the oil level when the engine completely cold
• Check the engine oil level every fourth fuel tank fill or weekly -
which ever is the sooner