Since I am new to Subaru and CVTs, I do not have an idea of how often to change the CVT fluid. The manual says to inspect the CVT fluid at 30K and does not give a replacement schedule. I live in the hot south Houston area and have ~26K on the Ascent already. Some of you long time Subaru owners should know when to change the CVT fluid. So when do you plan to change the fluid on the CVT?