110Deg C = 230Deg F
80 Deg C = 176Deg F
85 Deg C= 185 Deg F
Mark,
Hang tuff. Those terrorist bastards won't win.
If the engine cools when you are out "scratching the hedge rows"
then your radiator is big enough and the thermostat is doing it's job.
In you case, running hot in traffic indicates that your fan system is not moving enough air past the rad.
Would you post a picture of your setup? It sounds like a good fan shroud is in order.
Silly question here, but I have to ask it. : Is the fan on the front of the rad a "pusher" I.E. are they fighting each other?
http://www.wbuf.noaa.gov/tempfc.htm