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What is everyone finding as a difference between the Cat 625 and the Detroit 505 for fuel mileage?

I currently have a 2007 American Coach Eagle with a Cummins 500 and get about 5.5 running 70 MPH pulling about #5500
I have friends with newer coaches that had the Cummins 600 and they are getting in the mid to high 6's running same speed and towing slightly less.

Just curious what the big Cats and the Detroits are getting. I am not sure when Newell switched or if the Cat was an option. But I am looking at a 2006 with a series 60 and an 06 with the C-15.

http://austin.craigslist.org/rvs/5877473814.html
Cummins V-8 Turbo w/jake brake, 240 hp, Allison Trans. 12.6 kw Kohler Diesel Generator, 140 gal fresh water & sewer tank w/heater, 2 roof ACs 2 propane heaters, refrid, 6 newer tires , 10 gal water heater, 20' awning, backup camera. $17,900. Will consider trade for a mobile home on a small acreage in the Kingsland area. Brigitte 
1978 Newell
condition: excellent
cylinders: 8 cylinders
drive: rwd
fuel: diesel
paint color: custom
size / dimensions: 38'
title status: clean
transmission: automatic

http://indianapolis.craigslist.org/rvs/5899983742.html

here we have a 1984 Newell Coach, Detroit Diesel 8v92, Allison 5spd automatic, diesel generator has 2800 hrs, has every option available and it all works. Needs tires.

let me repeat, it needs tires.

1984 Newell

VIN: 1N9912377E1011023
condition: good
cylinders: 8 cylinders
fuel: diesel
odometer: 181000
size / dimensions: 40'
title status: clean
transmission: automatic

Premium Coach Group has listed #1504 for sale on RVT.com.  Elegant coach. 

http://www.rvt.com/Newell--2015-Gilbert-...6-UX180402

My power steering has just failed completely. i have read on the forum that the C15 is prone to sheering of the power steering pump shaft, has anyone had experience of this? is it the pump side that fails or the gear that drives the pump, is it a big job to sort out!?
thanks

not sure if this is a major issue but it's gotten cold and the door will open as it should be when closing it, it's like it doesn't have enough pressure to complete the closing. Just wondering if anyone has had this problem. Air pressure looks good and the other systems work fine.

   


Also out of sheer curiosity, I am looking for a couple of Newells.

My dad's coach is #730.
   


I just dropped it off in Miami this past Monday.

His old coach is #630. Does anyone know where that one wound up?

His first Newell, he bought used, I don't know what number it was but there is no mistaking it if any of you have ever seen it. It was painted up like and American Flag. White with red and blue swooping stripes with stars in them.

Just wondering if any one has ever seen them and what may have happened to them.

            This has been a head scratcher. No one has seen this happen before so have not been able to resolve the problem.

My burner on the fridge gets a build up of some type of matter that starts at the igniter rod and grows to and makes contact with the thermocouple. Fridge runs ok until it is purposely shut off such as for cleaning then won't relight because it is now shorted between the ignitor and thermocouple.
Thought it might be something in the gas but I use the same gas supply for another camper fridge which burns clean.

This started a couple years ago and seems to be increasing its happening in a shorter time. Had to get up at 3am this morning to clean the stuff for re-ignition and 8 hrs later there was almost half the distance built up again see pic.

Attaching 2 pictures.

Brad

Based on the paint, it could be #566 but not sure.

3 slide, 96,500 miles, asking $150,000

http://fortsmith.craigslist.org/rvs/5932123762.html

30' $8,900, Lowell, AR. 391 Ford Industrial Engine with Allison 6 speed transmission. Twin beds.

http://joplin.craigslist.org/rvs/5942744325.html