Ford 2003 Mustang Workshop Manual page 1863

SECTION 303-03A: Engine Cooling
GENERAL PROCEDURES
Heater Core Backflushing
Special Tool(s)
Flush Kit
164-R3658 or equivalent
Drain Kit
164-R3662 or equivalent
Material
Item
Motorcraft Premium Cooling
System Flush
VC-1 or equivalent
Motorcraft Premium Gold
Engine Coolant
VC-7-A (in Oregon VC-7-B)
(yellow color)
1. WARNING: Never remove the pressure relief cap while the engine is operating or
when the cooling system is hot. Failure to follow these instructions can result in damage
to the cooling system or engine or personal injury. To avoid having scalding hot coolant
or steam blow out of the degas bottle when removing the pressure relief cap, wait until
the engine is cooled, then wrap a thick cloth around the pressure relief cap and turn it
slowly. Step back while the pressure is released from the cooling system. When you are
sure all the pressure has been released, turn and remove the pressure relief cap (still
with a cloth).
Once pressure is released, remove the pressure relief cap.
2. Partially drain the cooling system. For additional information, refer to
Filling and Bleeding
3. NOTE: For additional information, refer to the cooling system flusher manufacturer's operating
instructions for particular vehicle hook-up.
Use an appropriate cooling system flusher to backflush the heater core. Use Motorcraft Cooling
System Flush VC-1 or equivalent meeting Ford specification ESR-M14P7-A. Flush with water
thoroughly after using VC-1 or equivalent prior to refilling the cooling system
4. Fill the cooling system. For additional information, refer to
Bleeding in this section.
Specification
ESR-M14P7-A
WSS-M97B51-
A1
in this section.
2003 Mustang Workshop Manual
Cooling System Draining,
Cooling System Draining, Filling and