1999 Mercury Cougar Owner Guide 1st Printing - Page 182

Maintenance and care Engine coolant maintenance Do not put engine coolant in the container for the windshield washer fluid. Use Ford Extended Life Engine Coolant F6AZĆ19544ĆAA or an equivalent DEXĆCOOL ® coolant or a coolant meeting Ford specification WSSĆM97B44ĆD. Ford Extended Life Engine Coolant is a silicateĆfree coolant. Do not add conventional coolant or recycled coolant to your vehicle. If you are unsure which type of coolant your vehicle requires, contact your local dealer. Adding engine coolant When the engine is cool, add a 50/50 mixture of engine coolant and water to the engine coolant recovery reservoir - DO NOT ADD DIRECTLY TO THE RADIATOR. Add straight water only in an emergency, but you should replace it with a 50/50 mixture of coolant and water as soon as possible. 182