Trip report, long tow trip with enclosed trailer - Dodge Cummins Diesel Forum
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post #1 of 2 (permalink) Old 05-13-2011, 05:16 PM Thread Starter
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Trip report, long tow trip with enclosed trailer

Took a long trip from SoCal to Southern Michigan towing a 24í enclosed Haulmark trailer, 4500 miles total.
Empty going and full coming back with my momís stuff and car.
4k empty, Smarty Jr set to SW2 tq4/tm2 on trip with empty trailer.
8k loaded. Smarty Jr set to SW3 tq4/tm2 on return trip loaded.
Overall average 11.8 and I kept the speed at 65-70 the entire trip including mountain grades.
I averaged 13+ in CA and 11-12 in the rest of the states. My daily driving mileage before the 30% injís was 16.2 so down to 13+ towing in CA isnít bad. Rest of the states it was worse but I think it was the green winter or bio fuel, my fuel in SoCal is yellow/gold and doesnít change in the winter so Iím guessing that Is what it was, or a bio blend but the pumps didnít say anything about bio.
I didnít drive easy, keep my foot in it on the grades and only shifted out of OD when the EGTís got above 1200 and then they dropped with the RPM increase. It was fine pulling the steepest of grades going over the Rockies (11,600 ft). It pulled 30# boost easy and could have pulled more if I wanted it to so the stories I heard about diesels not doing good going up to altitude didnít hold true for my trip. It ran fine and more than enough boost/power at 10k+ altitude.
For comparison, I made the exact same trip (trailer, weight, route) two years ago with my F250 V10 3-valve 2WD with highway radial tires. Difference is that the truck itself weighed 2000 pounds less than my Mega 4x4. The Ford averaged 8-mpg and struggled up the Rockies with the thin air.

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post #2 of 2 (permalink) Old 05-13-2011, 05:36 PM
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I can feel a noticeable difference in my truck when I go from 5280 up to 8-10k. It shows in my EGT too.

That's not to discount your experience. I'd expect that variance of results between those trucks.
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