i am planning on rebuilding the tranz but will most likely not happen until spring. the syncros are getting bad, it is not as bad in the morning when the fluid is cooler. i am going to change the fluid and wanted to know if i should run something different than syn ATF. i live in the north western part of WI, so it will be seeing sub zero temps, what are your recommendations for fluid. and it has just over 500 miles on a new clutch.