Post by
DAEDALUS »
https://forums.nicoclub.com/daedalus-u128.html
Wed Feb 12, 2003 2:13 pm
Whether you should install a cooler in series with the heat exchanger or not is open for debate, and may depend on the climate in which you drive. Without it in series, you don't get the benefit of the coolant helping to warm up the ATF at startup and in cold weather. In very hot climates, a separate system *might* be better overall, but I really don't know. The radiator was designed to work with 2 fluids; by removing 1 fluid, I'm certain the overall cooling capacity of the radiator is diminished, but might be OK since it is only cooling AF. The other question, then, is whether or not the external cooler is sufficient to cool the ATF on its own. Again, I don't know. My hunch is that, in most cases, it's better to have them in series but without experimentation that's nothing more than a guess.