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You can buy it at mazda,
Here's what mazda says:
To enhance service life, reduce waste material, and lower maintenance costs, a new long-life pre-mixed “FL22”
engine coolant is being introduced into mass-production for the models shown above.
It is recommended that FL22 coolant continue to be used for models originally filled with FL22 coolant from the
CAUTION: FL22 coolant is “pre-mixed” and must be added to the cooling system as is. DO NOT ADD
WATER TO FL22 COOLANT. Adding water will dilute the solution and lessen the effectiveness of
If coolant replacement becomes necessary for prior Mazda models (not originally filled with FL22 coolant), FL22
coolant can be used. If FL22 coolant is used for prior models, be sure to place the FL22 sticker on the reserve
tank or degas bottle to indicate FL22 coolant is being used.
• In the case of prior models, the coolant replacement interval is every five (5) years or 60,000 miles
• Six (6) FL22 stickers are included with each case of coolant.
Not very clear, but it's just another new type of coolant. Says here on the bottle, "ethylene glycol based.... 55/45 mixture recommended..... developed to provide corrosion and rust protection.....boiling point 270 degrees, freezing point -47 degrees. Ingrediants: Ethylene Glycol (107-21-1), Water (7732-18-5), Diethylene Glycol (111-46-6), Potassium Hydroxide (1310-58-3), Proprietary Inhibitors (NJTSRN 217).