Engine Cooling: Coolant

CAUTION: Some vehicle cooling systems are filled with Motorcraft Premium Engine Coolant VC-4-A (in Oregon VC-5, in Canada CXC-10) or equivalent meeting Ford specification ESE-M97B44-A (green color). Others are filled with Motorcraft Premium Gold Engine Coolant VC-7-A ( in Oregon VC-7-B) meeting Ford specification WSS-M97B51-A1 (yellow color). Always fill the cooling system with the same coolant that is present in the system. Do not mix coolant types.

NOTE: The addition of Cooling System Stop Leak Pellets VC-6 darkens Motorcraft Premium Gold Engine Coolant from yellow to golden tan.

Engine coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle.

When adding engine coolant, use a 50/50 mixture of engine coolant and clean, drinkable water.

To maintain the integrity of the coolant and the cooling system:

Add Motorcraft Premium Engine Coolant VC-4-A (CXC-10 in Canada, VC-5 in Oregon) or equivalent meeting Ford specification ESE-M97B44-A or Motorcraft Premium Gold Engine Coolant VC-7-A (VC-7-B in Oregon) or equivalent meeting Ford specification WSS-M97B51-A. Do not mix coolant types.
Do not add or mix orange-colored Motorcraft Specialty Orange Engine Coolant VC-2 or equivalent, meeting specification WSS-M97B44-D. Mixing coolant may degrade the coolant's corrosion protection.
Do not add alcohol, methanol, brine or any engine coolants mixed with alcohol or methanol antifreeze. These can cause engine damage from overheating or freezing.
Do not mix with recycled coolant unless it meets the requirements for Ford specifications ESE-M97B44-A or WSS-M97B51-A1. Not all coolant recycling processes meet these Ford specifications; use of such a coolant may harm the engine and cooling system components.