THANK YOU FOR REPLY .smj999smj wrote:First, you should not a need an additional auxilary trans cooler; the auxilary cooler installed from the factory should be just fine at cooling the ATF.
Second, radiators with integral oil cooler have been used reliably for decades, but any integral oil cooler "could" fail...just like any mechanical part "could" potentially fail. So, to say what radiator will not fail is impossible to say. What we do know is that the radiators Calsonic supplied to Nissan Pathfinders/Frontiers/Xterras made in North American have had a high rate of failure for 2005-2007 models and may include 2008 through 2010 models, if we go by the radiator warranty extension issued by Nissan. The current radiators sold by Nissan have a new part number and we assume the problem has been addressed that caused the original radiators to fail; they are expensive, though, in the $450-$550 range. Griffin Radiators makes...or was making...an all-aluminum replacement radiator for around $550, I've heard. Personally, I went with a China-made replacement radiator that I got from Parts Express on Ebay for $92. It has a lifetime warranty and appears to be well-constructed (time will tell). If fit as good as the original part. Trans fluid should operate in the 175-200 degree F. range. Personally, I feel radiator replacement and using the radiator's integral cooler as it was originally designed is the best way to go, especially in colder climates, but there are many others who don't feel the same way and prefer to just bypass the integral cooler. It's really your choice which way you want to go.
i read your reply on other page and thank you for that as well. yes i think is you are right, if problem in that radiator you will just change the radiator and there is big chance this problem will be solved but what about if this problem will be with other radiator as well? i agree to pay even $300 for radiator witch 100% will never let me down. that warranty from radiator will do nothing for me if my transmission will gone. you are confirming that this type of radiator are in use in many vehicles many years but please google it and will find how many problems they have too. i wont to make way that coolant will never have touch with transmission fluid. i decide to do by pass but same time i need to make it as a heating system as a cooler