I don't think it's really worth it to replace the oil cooler unless you go the distance and replace the stock pressure based system with a thermostatic one.
As for the transmission cooler, I thought it was 180? but I don't know a whole lot about automatic transmissions. Anyway, the bit I was still waiting to hear back about was if the oil cooler needed a thermostatic bypass (or if it SHOULD have one added) or if the transmission has an internal bypass.
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