Protect the cooling system in your Powerstroke with Motorcraft VC-12 Specialty Orange Engine Coolant Revitalizer. Different engines require different chemical concentrations in their coolant. Proper levels of nitrite and silicate are what give Motorcraft Coolant its ability to protect your engine. Many other coolants do not have the necessary nitrite and silicate levels. Motorcraft Supplemental Coolant Additive recharges depleted silicates and nitrites in the cooling system. FEATURES: Genuine Ford Part Direct-Fit Replacement For Use With Motorcraft Orange Coolant Ford Suggested Use: Use anti-freeze test strip kit to test for coolant quality every 15,000 miles. Add Supplemental Coolant Additive as necessary.