Aston Martin One-77 2010 Owner's Manual page 136

Engine Coolant Level
Warning: Do not remove the filler cap until the
coolant system has cooled. Scalding can be caused
by escaping steam or coolant.
Use a cloth or glove to protect hands and protect
face and arms adequately.
1. Remove the pressure cap to check the coolant
level. The correct coolant level is to the top of
the reservoir tank. Top up with the correct
antifreeze mix, if required
Capacities', page 9.11)
2. Make sure that the filler cap is secure after
topping up.
Do not over tighten.
If required to remove the pressure cap before the
engine is cold, use gloves or a protective cloth and
slowly loosen the pressure cap. Allow residual pressure
to slowly drop. Continue to turn the pressure cap until
it is released.
8.12
(Refer to 'Fluids and
.
Power Steering Fluid Level
Make sure that the power steering fluid does not
contact the paint work during topping up. Serious
paint work damage can result. If a spillage does
occur, immediately flush any power steering fluid
from the paint work with clean fresh water, then
wipe with a clean damp cloth.
Always check the reservoir level when the engine is
cold and with the front road wheels in the straight
ahead position.