Pulling a jayco Pinnacle from Los Angeles to Butte Mt

travelnutz wrote:
8 MPG's really sucks and has to be a gas engined truck being pushed hard for 68 MPG with a large RV behind. Had many gas trucks towing large RV's in our 51 years of RV'ing and know. Our 12,800 lb truck scaled weight 5th wheel loaded to travel behind our Crew cab 4X4 long box Duramax Diesel constantly averages about 13-13.3 MPG towing at 58-60 MPH and we also average about 50 MPH for distance traveled each day. Been that way for a little over 80,000 miles of towing that same RV.

Very often, we'll see the same RV rig that we'd met and left the same CG as us and driving much faster than we do, just pulling in to the next CG we stop at night. Talked to so many of them again and hearing them claim we had to be going faster than 60 to keep up with them and get to the same place at the same time within 10-15 minutes but we never do go over 60 and always on cruise control. Long retired and what's the rush anyway?

Towing at 60 VS 68 will make a huge difference in mpg. Mt combined load of 29K at 60-62 I will get 9-9.5 and at 68 it will easily drop to 8. A gasser with my load would get 4mpg.