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      11-24-2012, 08:12 AM   #6
New Member

Drives: 130i
Join Date: Nov 2012
Location: FIFE

Posts: 10
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Originally Posted by Light_Em_Up View Post
Two summers ago I tracked my coolant temperature for a few days at random. Outside temp was 20-25C. Temp seemed to wander around a lot and not follow specific activities. As I recall the range was 90-106 with it trying to control to 100. Only once or twice have I been aware that my radiator cooling fan had operated.

Thanks for your info
The T stat seems to open at 96-97c so engine should be around this figure most of the time. The highway/motorway high temps of 102-104c seems to be because to return good mpg on this situation requires high engine temp.