There seems to be a slight and I stress slight film of oil in my coolant. It is clear (not brown). If it was my head gasket wouldn't I have brown oil floating on top and a bit more than just a slight film on the top? Could it be something else maybe? I can also smell coolant through my vents ever since I changed it (about 2 months ago). I use mobil 1 5w-40 oil and I don't seem to lose any significant amount of oil between changes, maybe a quart, but it has always been like that.
Thanks
Dave