DexCool meets DaimlerChrysler MS-7170, MS-9769 requirements.
Prestone Exttended Life Antifreeze
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The use of aluminum cylinder blocks, cylinder heads and water pumps requires special corrosion protection. Only Mopar(R) Antifreeze/Coolant, 5 year/100,000 Mile Formula (glygol base coolant with corrosion inhibitors called HOAT, for Hybrid Organic Additive Technology) is recommended.
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Like I said - the whole issue is protection of the aluminum parts - DexCool does that wether your rig says PT Criuser on the hood or GMC.
