If you’re cruising it, I’d for sure add the larger cooler. The push buttons run a bit hotter than the non pushbuttons. The factory cooler really doesn’t work very well. Especially in hilly roads or stop and go traffic. What I would do at a minimum is a pan with fins to act as a heat shrink, then put a sensor in and monitor those trans temps. You could route it up and hide in the glove box or ash tray even. Then if youre seeing high temps, add the larger cooler