All - The turbo hose was blue in color, and my understanding is the blue colored hoses are the low temp hoses. The hot side of the turbo, (Engineer Mike told me) could be as high as 500 degrees. Since the blue hose was only rated for 350 degrees it was only a matter of time. It took about 300-40 minutes to change the hose, and the coach seemed to have more power after the change, so the other hose was leaking, but not making noise for a while.
I do have lots of bruises on my arms from only being able to squeeze into the space with one arm, and was afraid I was not going to be able to get the hose on there, but it just finally slipped on the end of the top pipe. I am wondering if I need to carry a spare of this one, Mike what do you think?