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716 Posts
My 3.0tdi's fan never runs usually--i have got it on once tackling a very long soft boggy beach in 38 deg.c and that was low speed only. Temp went a degree or 2 over 90 then. They are remarkably good at regulating their temperature. My old Audi S2 had a 10-15 degree range between cold weather running and peak of summer sat in traffic.
