After towing a 15000lb 5th wheel for over 20 years with gas and diesel 2500s, 3500s and 4500- SRW and DRW there are a couple of never do again that I have come up with:
Only diesel no gas... the exhaust brake alone is the tipping point along with the torque for mountain grades.
DRW only no SRW- I live in Los Angeles and would commute 24 miles each way into downtown LA daily in my crewcab dually longbed. Never an issue. In fact I felt very safe in the big truck. The DRW provides a very stable tow platform.
Keep in mind on forums you will read posts mostly from folks who have a problem and are looking for an answer, are new and need info, or like me like to read through the posts and provide answers when possible. The majority of truck owners and RV'ers never post on forums...you are seeing just a small sample of the total population.
In 2008 I moved up to a C4500 Chevy with the duramax and allison. It is the best truck I have ever had. Towing is a dream with it.
