My 94 855T is primarily driven on the highway at about 120km/h-140km/h or about 75m/h-84m/h for about 15 minutes each way five days a week. I find that at these speeds and at winter temperatures in Toronto, Ontario, Canada ranging usually between -10 degrees Celcius (14 F)to about -15 degrees Celcius (5 F)for the majority of the winter, and up to -25 degrees Celcius (-13 F) without windchill. Since the windchill affect does affect the cooling of the engine, I will also include that the windchill temperature right now is about -20 degrees Celcius (-4 F) and can hit well into the -40 degree Celcius (-40) range for a week or two, and once in a while, for a day or two, wind chill temperatures can hit -50 degrees Celcius (-58 F).

When driving in the city, for the most part, the engine coolant temperature usually stays relatively close to the half way point between the coldest and the hottest readings possible. I am aware that this reading is the optimal operating temperature.

Due to the environment and the driving speeds, I have found lately that the engine temperature never reaches the midway point on the coolant temperature guage. On average, the temperature guage only makes it about 1/3 up from the coldest reading possible. I am aware that fuel economy and engine wear increase if the engine temperature is not at optimum/designed temperature.

Are there any suggestions as to what I can/should do?

So far, I have thought about using a large piece of clear lucite (hardened, shatter proof plexiglass) and securing it to the grill using wire or string to decrease the amount of "fresh" air reaching the radiator.