I have the small reservoir that mounts on the shock tower. I have actually been considering changing to the ice tank because I think the larger volume of water will help keep the temps down longer. The reservoir that came with the original kits is pretty small.sorry to resurrect this thread but which coolant method do you have? The ice tank or the smaller unit that sits by the blower? I’m wondering if the ice tankfilled with coolant is too much for the intercooler pump provided by the kit. I wonder if I should try just straight ice in it?