The "Ultimate" 40'+ DP Motorhome Reviews!
Hidy-Ho Good Neighbor, “Ultimate” may be pushing things a little but we’re talking Pushers here right! I’ve been assembling information on DP’s that fit my interest from all the major DP manufac...
Forum Discussion
Mike and Trish wrote:Foodsman wrote:
Do all Class A Diesels from 2010 on require DEF?
Don't fear DEF, though -- my new (2014) coach uses it, and gets better mileage than my 2008 that didn't. Cummins says using DEF to clean up the exhaust stream allows them to optimize engine performance better than in the EPA2007 engines that preceded these, so that mileage is better, likely enough so as to make up for the cost of the DEF, which is really minimal.
I agree. My 2013 Entegra with 450HP DEF Cummins weighing 43,000 lbs gets 20-25% greater fuel mileage than did my 2003 Beaver with 350HP Cummins weighing 33,000 lbs..
