[78w72]

Agree on running an aux cooler with the radiator cooler... ALL aux cooler companies suggest to run the aux after the rad cooler, lets the rad cooler remove most the heat first (or heat the fluid when cold) since liquid cooling is more efficient than air cooling. Just makes for a more efficient system than the aux alone or before the rad cooler.

Another important thing regarding trans fluid temps is that a stand alone aux cooler wont allow the fluid to be heated up fast in cooler or cold temps... & the opposite in hot temps is that an aux cooler only cools with air movement which means when the car is moving, if you sit in stop & go traffic or staging lanes etc, there is zero cooling & the trans fluid will get a lot hotter than needed or what a rad cooler will keep it at. I dont have any temps to post but that is just basic science & the reason most all aux cooler companies say to use both with the aux cooler after the rad cooler.

As for the buggered up threads, they do make inverted flare fittings for trans cooler line in the rad, I use a fragola aluminum that is inverted flare to AN, im sure other companies offer them in steel too. As mentioned, the flare is what seals, the threads do nothing but using tape on them when partially stripped might give a little more bite to snug down the fitting to seal. I also saw some with an O-ring that might help seal if the flare is messed up some. In this case I would give them a try but probably cheaper & easier to buy a new champion radiator for ~$200 shipped, with a lifetime warranty. Stay away from the no name radiators on ebay if possible, champion is the best budget rad, or spend a hundred or more & get a cold case. If new fittings dont seal the old one, get a nice new alum & be done with it & have better cooling.