Auxiliary transmission cooler.

Simple post… I'm going to be using my 2013 Nissan Sentra for uber/lyft in the south Florida heat. it’s a 2.0 SR so very basic. I was hoping I could get some advice here about aux coolers and anything else that you guys recommend and be pointed in the right direction parts wise. I’m religious about keeping up with my maintenance inside and out. I get compliments on it all the time cause I go the distance for it. It’s got 183K on the odo and this car will be heavily driven on the highway and stop/go of Miami. the CVTs suck… already replaced it once (engine still running like new) current tranny has/had 27ish K before I left the country. before anyone says find a better job blah blah blah… this is my only option whilst I recover from a serious injury that affected use of my left hand. don’t need job tips or advice!

I am also considering doing this to my jeep wrangler rubicon 2017 JKU… (3.6 pentastar, automatic transmission) its going to have the Dana 44s trussed and gusseted as well as free floated, frame reinforced and it will have some engine work done as well as a tranny swap and regearing… that is fixing to sit on 33 nitto trail grapplers. I’m going to be overhauling that for heavy off-road/overlanding, extended road trip use. I know those things run hot, is it a waste to do this to my jeep? if its not a waste or a bad idea, I’d like to do it for a road trip I have planned later this year (Florida to Nevada, Oregon, Colorado, New Mexico etc) going to vacation in it and see places I have wanted to see for far too long so it’s going to see some serious highway use in between the off roading.

thanks in advance guys. take care.