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Old 01-27-2011, 08:12 AM   #1
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Join Date: Sep 2010
Posts: 19
Cummins ISBXT owners

We're about ready to pull the trigger and upgrade our 2008 Southwind to a DP. Fleetwood is very strong in this area so probably going to end up with a Discovery. Most units we are dealing on are 08 or 09 with the 350 hp ISB. The local dealer also has a new 2008 Excursion [with the Cummins ISC] but my wife hates the floor plan. We've also looked at [via the internet] a 2007 Discovery with a Cat C7 but it's 1700 miles away.
What are the real world experiences with the ISBXT in 40 foot coaches. In test drives it feels like a rocket compared to our 21k lb 38 ft Southwind but I don't want to make a $97k mistake.
Thanks for any info.
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Old 02-14-2011, 09:29 PM   #2
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Join Date: Feb 2011
Location: Homestead, FL
Posts: 51
From all the research I done when I bought my 09 DP Bounder, You will find the Cummins is cheaper to maintain than the Cat. A Cat mechanic also told me to stay away from the Cat. You may find others who disagree but Cat has gotten out of the over-the-road area.
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Old 02-14-2011, 09:34 PM   #3
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Posts: 139
I've had my 40' since October, I'm overall happy with it. Although I wish it had a little more power in the hills and mountains of CA.
2019 Entegra, Aspire 44r. Former coach 2010 Fleetwood Discovery, Cummins ISB 350, 2016 Jeep Rubicon or 2005 Jeep Rubicon.
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