Cooling ?s

You are good for another 9 months at this point. I would be very concerned where I live because 85 F is very mild. We still have some >100 F days before winter.

Kit's point is very good. Check your mileage. Excessive fuel use is going into heat. A lot of people here put in wild "racing" cams that give crappy performance at idle and cruising rpm's. Besides bad mileage, noxious fumes, and poor driveability, they have over-heating issues. So, get your engine running optimally and it may need less cooling. Otherwise, many here have cured over-heating by switching to a new aluminum radiator.