So it sounds like I do have a PTC heater in my 330D after all.
This evening it was -3 when I left work at 1930. I could feel warmish air blowing out after I'd travelled about 500m preceeded by a few mins of idling whilst I cleared the ice of the screen. Would the diesel warm up that quick ? No temp gauge in my car to tell me
Im going get my greenhouse thermometer and take some measurements. Plus Torque Pro can give me coolant temps.