oldrick38

I forgot to mention that they also extended the slobber tube. Frightliner also said this is a common problem and causes the blockage with a rear radiator in most cases.

I had a very similar problem I took it to Frightliner in Gaffney South Carolina. They determined that it was a clogged radiator, they actually have a steam cleaning station there and they steam cleaned the radiator and I have never had another problem with it. From what they told me this is a common problem with a rear radiator.