I have a 2012 2WD Silverado 1500LT crew cab short box and I tow a 5,500 center console boat between Ohio and Florida. Anybody got an opinion on how much better the 3.0 Duramax will handle this load. The 5.3L does ok, lots of RPM and less than 9MPG. I read where the 6.2L has the same upcharge as the 3.0
Thanks
Niles