I was worried about my oil temperature after fitting a Stage 1.5 Garage 56 tuning kit, which has encouraged me to use the full performance envelope of the M3W, now it has stopped pinking, plus I have about 20%+ more power and torque. I measured the oil temperature after a long run by putting a thermometer into the dry sump tank. It was reading just over 110º C, which I felt was a little too warm. I use Motul 20W-60 Le Mans 300V full synthetic competition oil. I contacted Motul to enquire about the working range of this oil. They came back to me and said the oil was perfectly happy up to 160ºC, so I have binned the idea of an oil cooler, as being an expensive and unnecessary complication.
Wilson
