8. For extremely hot climates:
It is still necessary to maintain the coolant concentration above 40%.
NEVER decrease the coolant concentration below 40%.
Minimum coolant concentration is 40/60 for warm weather areas.
Engine coolant concentrations below 40% will decrease the corrosion/freeze protection characteristics of the engine coolant and may damage the engine.
9. Vehicles driven year-round in non-extreme climates should use a 48/52 to 50/50 (freeze protection -34°C to -37°C [-30°F to -34°F]) mixture of engine coolant and distilled water for optimum cooling system and engine protection.
Filling and Bleeding without a Vacuum Cooling System Filler
10.
NOTE: The cooling system is filled with Motorcraft® Orange Antifreeze/Coolant. Do not mix coolant types. Mixing coolant types degrades the corrosion protection of the coolant. Failure to follow these instructions may damage the engine or cooling system.
NOTE: Engine coolant provides boil protection, corrosion protection, freeze protection, and cooling efficiency to the engine and cooling components. In order to obtain these protections, maintain the engine coolant at the correct concentration and fluid level in the degas bottle.
NOTE: Add Motorcraft® Orange Antifreeze/Coolant or equivalent.
Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.