should not be required any new vehicle if it was correct when it was PDI'd. Coolant fluctuates and as long as the level is between the Low and high gauge on the overflow tank nothing is required. Just make sure you use the right mix for your location in the country. See page 6-17 in your owners manual.
"FL22 is a longlife ethylene glycol antifreeze. The basic antifreeze is common to most brands. Most brands use a Hybrid Organic Acid Technology (HOAT) for keeping the cooling system clean and corrosion free"
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