Well... we made it 130 mile from our house in middle TN on our way to Newell to see Creslie and the team for some service and to explore the Pawhuska area for the week... 
We have the CAT C15 and the power steering went out as we were driving on I-40W... The Lord was looking out for us as the issue happened 1 mile from the next rest area so I was able to limp it (without power assist steering) to the rest area on I40W near Holladay TN - where we are now sitting... I searched the forum and found