PT transmissions are not happy with old burnt fluid. I have two of them, an 03 limited and an 05 Gt convert. The 03 got changed at 35,000 and the GT at 72,000 with no trouble from either afterward. I'd recommend going ahead and changing it. These aren't our old 904/727s. Here';s a great place to ask about PTs. http://www.ptcrew.com/?sid=9174b31ec2120977e2c7e5bd98adb784