Tranny cooler install Q's
Who knows. Run it both ways and find your best/coolest and go that way.
Also, keep in mind that the heat is generated mostly in the converter. So the more that converter stays locked, the cooler the temps will be.
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Most well known shops will tell you to delete the radiator cooler and just run the external - unless you are in a climate that requires the radiator to heat the oil - like sub 0's.
I still believe there is no harm in running it, as it does add a second cooler, which don't suck at all.
It's extremely possible that the external is just keeping up adn if you had the radiator cooler going, it might increase the cooling capacity. Just gotta make sure to hook it up right... From the trans to the highest port, then the lowest port back to the trans or to the highest point on the next cooler and etc. Simple, heat rises, so the cooler stuff is on the bottom.I'm all for trying both ways and go with what gets the oil the coolest during it's extreme times. 180* all day long is fine, but 220*+ bursts aren't. The extremes are what you are trying to avoid, IMO.... But I use mine for a completely different purpose, so I might be working mine harder. For me I saw a difference of 20*+ when I added the radiator in.



