In my 2022 Tucson hybrid, I've got pink coolant for engine coolant and blue coolant for the power electronics stack. I read in one of the Hyundai documents on the TechInfo website that the blue coolant is a special low-electrical-conductance coolant and is not interchangeable with the pink. However, I see youtube review videos of hybrid Tucsons in other countries (Canada recently) with pink coolant in the power electronics stack reservoir. Did Hyundai change their minds about the need for the special blue coolant? What color is the coolant in your PES reservoir?