Indy GT
Yea, I got one...too
Andy, I was actaully referring to Mark's comment about swapping out fluid based on color change, but on rereading, he swaps between the ATE Super Blue and Castrol SRF. Mark, the Castrol fluid is awfully expensive as I commented above but it is the absolute best wet (518F) and dry (590F) BP fluid available, anywhere. If price were no object, that would be my first choice.
But as Andy also correctly points out, you can accomplish the same flush-on-color method and stay with the more moderately priced ATE fluid line by rotating between Super Blue and Type 200 and still get excellent wet (396F) and dry (536F) boiling protection.