Let me ask what coolant you had added? You will find many of us that have observed a 5 or so degree drop in normal operating temperatures by going to Final Charge.
And if you feel it is needed, check out Source Engineering Wax Valve solution. I had it installed in place of my fan controller. (It had started to have performance problems, and I did not want to get stuck in High while on a long trip.) I like the S.E. Wax Valve solution, as the fan now is infinitely variable, vs Low/Medium/High - so I'm only using as much of he engines HP to run the fan at the speed needed to retain temperatures.
Hope others can answer your specific question. And best of luck to you.
Roo II is our 04 Country Coach Allure 40'
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