The filler for the intercooler is in the left rear (facing engine) of the compartment. It is an upside down "T" spliced into a coolant hose. Mine apparently was installed backwards in that the markings for the fill level face the battery and thus cannot be fully viewed, even with an inspection mirror.
So I need help. In the middle of the verticle part of the T the words Fill Level appear. There is an arrow up to the filler cap and another arrow down to the bottom of the T, but I can't make out what these arrows are supposed to mean.
Do the arrows mean the intercooler cold fill level is at the bottom of the T and the hot fill is at the top (cap) level? If not, what is the proper cold fill level?