Havin transmission probs on my nv4500... got most of it fixed and need to know which type of fluid i can use. On the side of the transmission it says Use Castrol Syntorq LT or a chrysler brand transmission fluid or immediate damage will occur. I cant find either type of fluid but i have found the same wieght fluid but it is CASTROL HYPOY C for heavy duty truck systems low speed high torque applications... ... also good for highspeed shock load..... anybody that knows if this is safe to use please respond... feel free to call me to 801 791 0301... im in UTAH... thanks in advance. . my name is zack