FORD 2003 Mustang v.2 - Manual (Page 171)

If you must remove the pressure relief cap or
radiator cap (depending upon engine application),
follow these steps to avoid personal injury:
1. Before you remove the cap, turn the engine off
and let it cool.
2. When the engine is cool, wrap a thick cloth
around the cap. Slowly turn cap counterclockwise
until pressure begins to release.
3. Step back while the pressure releases.
4. When you are sure that all the pressure has been
released, use the cloth to turn it counterclockwise
and remove the cap.
Engine coolant refill procedure-3.8L V6 engine
Note: Use the following procedure when refilling the
cooling system of a vehicle equipped with a 3.8L V6
engine. Failure to follow this warning may result in
damage to the engine and engine cooling system.
The following procedure should be used when
refilling the cooling system of a 3.8L V6 engine after
it has been drained or become extremely low.
1. Remove the cap
from the engine
coolant reservoir.
2. Open the cooling
system vent plug.
3. Remove the radiator
cap as previously
outlined.
4. Add a 50/50 mixture of engine coolant and
distilled water to the radiator until full.
5. Add a 50/50 mixture of engine coolant and
distilled water to the engine coolant reservoir until
the coolant level is at the “cold fill level” as listed on
the reservoir.
6. Close the cooling system vent plug.
7. Reinstall the engine coolant reservoir cap.
8. Reinstall the radiator cap.
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Maintenance and Specifications
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