FORD 2003 Mustang v.4 - Manual (Page 170)

Adding engine coolant
When adding coolant, make sure it is a 50/50
mixture of engine coolant and distilled water. Add
the mixture to the coolant reservoir, when the
engine is cool, until the appropriate fill level is
obtained.
Do not add engine coolant when the engine
is hot. Steam and scalding liquids released
from a hot cooling system can burn you badly.
Also, you can be burned if you spill coolant on hot
engine parts.
Do not put engine coolant in the windshield
washer fluid container. If sprayed on the
windshield, engine coolant could make it difficult
to see through the windshield.
• Add Motorcraft Premium Gold Engine
Coolant (yellow-colored), VC-7–A (VC-7–B in
Oregon), meeting Ford Specification
WSS-M97B51–A1
Note: Use of Motorcraft Cooling System Stop Leak
Pellets, VC-6, may darken the color of Motorcraft
Premium Gold Engine Coolant from yellow to golden
tan.
• Do not add/mix an orange-colored, extended
life coolant such as Motorcraft Speciality
Orange Engine Coolant, VC-2 (US) or
CXC-209 (Canada), meeting Ford
specification WSS-M97B44–D with the
factory-filled coolant. Mixing Motorcraft
Speciality Orange Engine Coolant or any
orange-colored extended life product with your
factory filled coolant can result in degraded
corrosion protection.
• A large amount of water without engine coolant
may be added, in case of emergency, to reach a
vehicle service location. In this instance, the
cooling system must be drained and refilled with a
Maintenance and Specifications
170