On a DP I’d say NO...previous owner put one on my Navigator and after 4K miles I disconnected it as it made the coach more tiring to drive. Decided the only way I’d use it was to make it adjustable on the fly. Have a thread on my $70 adjustable mount I made last week:
http://www.irv2.com/forums/f258/maki...le-451209.html Have not had the rig out yet but I’m sure it will be an improvement over a fix one. True Center makes an adjustable one (not sure of the cost) but the only way I’d put one on a DP is if it can be adjusted from the seat.
If you understand how the power steering works on a big rig, you are wasting your money thinking it will help in a blowout.