[MOTORHEAD]

Took the car up tp Glenns shop so he could have a look. The lower radiator hose lays against the rack mtg and may be heating the rack body in the area of the bushing is the only anommaly we can see. The bottom hose nipple makes an immediate 90 deg turn to clear the rack, but it is very close. the only thing I can do is try a different hose. Even so, I wouldn't think the bottom hose would get hot enough ( it's the cooled water returning to the engine ) to cause a problem. I'll have to get my temp gun on it to see the actual running temp.
Still don't know what the material the bushing is made of.