I want to do the same thing then. I'll put mine on a 15K schedule. Does your mechanic have a scan tool to read the transmission fluid temperature? I'm not sure if my mechanic has a Tech II compatible tool. That is one thing I am really frustrated with. I want to be able to pull the TFT data from the OBDII port. I haven't found anyone on the forums who have successfully done so. Everyone is just guessing at it. Some people estimate with their hand, others shoot IR thermometers at the pan. Problem is, the temperature of the pan could be very different from the fluid inside. I want to be able to check mine the correct way.