Coolant

Approved Coolant and Concentration

The approved coolant for Ford vehicles is a 50/50 mixture of water and Ford Premium Cooling System Fluid E2FZ-19549-AA or B or equivalent meeting specification ESE-M97B44-A, plus 1.5 quarts of Heavy-Duty Cooling System Additive FW-15 or equivalent meeting Ford specification ESN-M99B169-A.

This coolant mixture:

• Provides antifreeze protection down to -28.8 to -37.2 degrees Celsius (-20 to -35 degrees Fahrenheit).
• Provides protection against boil over to a system temperature of 120 degrees Celsius (250 degrees Fahrenheit). Too high a concentration of antifreeze, while allowable in extremely cold climates, may cause overheating in hot weather as antifreeze cannot absorb and reject heat as well as water.
• Provides corrosion protection, as coolant meeting Ford specification ESE-M97B44-A and ESE-M97B43 contains additives to fight scale and corrosion.
• Provides proper water pump lubrication. Too low a concentration of antifreeze may cause water pump failure.

The acceptable concentration ranges for all climates are: (minimum) 45 percent antifreeze to 55 percent water and (maximum) 60 percent antifreeze to 40 percent water.

Use only a hand-held refractometer, Rotunda Battery/Antifreeze Tester 021-00046 or equivalent to verify coolant concentration.

Ordinary tap water may be used for a brief time in an emergency unless the water is known to be exceptionally hard or high in alkali content. As soon as possible, the system should be drained and flushed and the proper mixture of water and Ford Premium Cooling System Fluid E2FZ-19549-AA or -B or equivalent meeting specification ESE-M97B44-A, plus 1.5 quarts of Heavy-Duty Cooling System Additive FW-15 or equivalent meeting Ford specification ESN-M99B169-A.

 CAUTION: Failure to use Heavy-Duty Cooling System Additive FW-15 or an equivalent meeting Ford specification ESN-M99B169-A could result in premature engine breakdown.

Unsatisfactory Coolant Materials and Supplementary Coolant Additives

The following are NOT authorized for use in Ford vehicles:

• Recycled coolant. Tests run by Ford Motor Company indicate that recycled coolant does not meet required specifications ESE-M97B44-A and ESE-M97B43-A.
• Alcohol-type antifreeze. Alcohol-type antifreeze does not provide adequate water pump lubrication and, having a lower boiling point than water, boils off reducing antifreeze protection.
• Alkali or calcium chloride solutions or water containing a high alkali content. These solutions will cause serious engine and cooling system damage, especially in systems containing aluminum radiators, cylinder heads, or other components.
• Propylene glycol-type coolant. Propylene glycol-type coolants provide less heat transfer and some may not provide enough corrosion protection.

Coolant Disposal

When disposing of used coolant, always do so in accordance with all applicable federal, state, and local laws and regulations. Note that antifreeze is toxic to humans and animals.