It would reduce the life of the fan for sure. When running the AC on high with the headlights and foglights on the battery voltage might drop below normal at idle.
Why is it running hot? I doubt that little fan is gonna keep it much cooler if you have a problem.
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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000
GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles
http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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