OAT is used in our 2013 Grand Caravan 3.6L engine, and it has a slightly purple tint to it under certain lighting conditions. You want to use Chrysler PN 68051212AB or 68051212AC 50/50 mixed HOAT coolant, or 68048953AC for straight HOAT antifreeze. These are 5-yr/100K mile products. OAT is a 10-yr/100K mile product. More @Wikipedia
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