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JD75/Skycat, is there any reason why you think the OE thermostat pushes temperatures into the 120C. What would be the benefit BMW engineers were angling for with this? The reason I ask is, if the solution to better cooling is having the thermostats action point reduced, wouldn't this be the obvious thing for BMW to do first before sticking extra coolers in the 1M & BMWP Performance Pack?
I'm really concerned about the temps in my car while on the track which hit about 130 sometimes, but the engine ran perfectly well and seemed to be pulling hard as ever. The 120C mark is a mid point on the engine and it seems to love being at this temp. From your extensive experience, is there any benefit to running warmer?
Thanks.
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