A heat exchanger arrangement includes a heat exchange body (116), a first fluid path (118) extending through the heat exchange body, and a second fluid path (120) extending through the heat exchange body in thermal communication with the first fluid path and fluidly isolated from the first fluid path. A bypass path (122) is arranged externally of the heat exchange body and is fluidly connected in parallel with the first fluid path. A control module (124) is operably connected to the bypass path to control temperature of fluids traversing the first fluid path and the second fluid path.
