my diesel auto p38 needs a new radiator now i have been on ebay in search for one and all the diesel auto ones have a transmission cooler in the bottom. my question is do the transmission oil cooler pipe go to the bottom of the radiator where the oil cooler is? the reason i ask is because my transmission oil cooler pipes go to a radiator thats tucked behind the bumper infront of the nearside wheel. i cannot understand why theres a oil cooler in the radiator aswell as behind the bumper can anyone help me please