I just got back from a 1500 mile trip, pulling the 5er about 1100 of those miles. The set up is as below in the pic, and the 5er is 37' and weighs around 11500#. I have weighed it several times. ...
18.5k loaded from N VA via WV, KY, TN, IL, AR, OK, Belen NM via Santa Rosa and Vaughn. Belen-Creede CO, Creede-ABQ-OK-VA reversing via KY. 10. 8 MPG and went down to 9.6 from OK to VA. I have a 100 gal capacity and bought Phillips petroleum fuel and it seems to have a lower cetane but was 3.52/gal. Chevy Duramax, turned up to 385 HP.