I too run Redline ATF fluid. It's been holding up well to the abuse of FI.
When you take it to the dealer, they may just do a single drain which gets about 1/3 of the fluid actually changed. I'm not sure if that's how they do it all dealerships, but that's how they did it at mine. Preferably they would drain and fill until the fluid is completely pink/red.. which is about 3 times or so.
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