My2009 qx56 has developed a coolant leak in the right rear, just ahead of the rear tire at 80k. I can see its coming from one of the 4 aluminum lines running along the frame but can't tell which one because the leak is right where the lines are enclosed by a plastic/steel bracket. I've read that sand and such gets between the lines and this bracket and the lines wear down until they leak. I'm thinking of cutting and splicing, so my question is, which of these 4 lines are the coolant lines, and which are a/c lines.
