Ok I have come across a 2009 Nitro that was leaking trans fluid from in front of the radiator. Which i believe to be the trans cooler. So i got new hard lines with gaskets from dealer. I replaced those that go from cooler to the rubber lines in the front of the engine. Put it all back together filled with coolant with no issues. I also cleaned out ends of rubber lines and replaced o rings and cleaned mating surface on cooler had it running for some time and drove it and there was no leaks. Job done problem fixed i thought well now the next day same problem its leaking fluid again havent taken grille off yet to look closer at the cooler while its running and warm in hope to find the exact problem. I am hoping that someone has either had ran into this issue before or has some input. And im wondering if it would be a good or bad idea to go to the auto parts store and buy a aftermarket cooler and mount in front of the stock one and run new line from that to the old lines which i will reattach to the rubber line in the front of motor i removed from it when i put the new ones in instead of hacking up the brand new lines. Im pretty sure im not the only one who has ran into this issue any input will be appreciated.