Coolant additives will significantly improve the cooling efficiency of your 2011+ Mustang. Try Red Line Water Wetter. Water Wetter is a unique coolant additive which reduces surface tension, thereby lowering coolant temperatures by as much as 30 degrees Fahrenheit. Coolant additives also provide additional protection from rust and corrosion in the engine’s cooling system. Compatible with all models: GT, GT500 or V6.
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