Overheating while towing? Low weight.

[PK]

Well, in my opinion, you are running too hot when not towing.
Running at 200F is 25F above where mine runs.
I have a scan gauge connected full time.

My thermostat opens at 150 - 160, and from then on the cooling system just hovers around 170 - 175 when not towing, and goes up to the 175 - 180 when towing a 3000 lb boat in the middle of summer.
The fan only ever kicks in when stuck in traffic, or when towing.

I would check you fluid is circulating, and then check the fan clutch.


(Note - Metric to retarded Imperial measurements done to assist my USA friends.)

PK