No cooling problems, at the moment. But then again, it is winter and the temps have been between the 40s-60s F. The car has been running a needle width below the top of the 8 on the 80C marker. You can just see the top of the 8 without seeing the black inside the upper 8 loop. Normal, from what I gather. I was able to get over 200K miles on those little 1.6 Litre VW diesels with the cooler thermostat and was just wondering if something similar was available for the M103.