I'm new to the Crossfire, so if I'm missing something please set me straight. The way I understand the FSS system, aren't we supposed to change the oil when the computer tells us to? Doesn't the FSS system compute many variables concerning how the car was driven, temps, speed, etc. in determining the oil change cycle. One can always change their oil whenever they want of course, but it seems to me to be pointless to pick a blanket mileage for everyone.