mjack138 Posted June 13 Share Posted June 13 I have a 2020 Navigator Reserve without the Heavy Duty tow package. I’ve noticed that the transmission temperatures get high quickly while towing our boat that is near the towing capacity under what should be effortless circumstances otherwise. Has anyone upgraded the radiator to the Heavy duty towing package radiator, or upgraded anything else that has been effective in cooling down trans temperatures? Quote Link to comment Share on other sites More sharing options...
twintornados Posted June 13 Share Posted June 13 Here is a solution that is as old as the automatic transmission itself.... https://transmissioncoolerguide.com/transmission-coolers/best-transmission-coolers/ Quote Link to comment Share on other sites More sharing options...
mjack138 Posted June 13 Author Share Posted June 13 I may go this route, but wanted to see if the factory heavy duty tow radiator upgrade had been done with good results. Thanks Quote Link to comment Share on other sites More sharing options...
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