Modified Cummins Towing MPG
#1
Modified Cummins Towing MPG
Alright, I'm just looking for a little confirmation on something I already believe I know the ansewer to. I have an aquantance that claims his 5.9 Cummins HO Dually with a number of Mods (which he hasn't disclosed) claims that he can load up his cattle trailer to a weight of 30k lbs (GVWR of probably around 38k), tow at 75 mph, and yield 17 mpg? Personally, I'm not a big diesel person, however I'm fully aware of all of the mods that can be made from lift pumps, to injectors, to turbos, to head studs, and so on. The claim appeared to be completely outlandish and goes against most everything I know however I really don't have any evidence one way or the other short of his claim. Any thoughts. If it's plausible that fine but at the same time most of they guys I know that are towing with diesels modified or not are no where near 38k lbs and get anywhere from 8 mpg to 13 mpg. 17 mpg seems like a bit of a stretch especially with the weight and speed. Any thoughts?
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#10
I have never used the overhead 'lie-o-meter' but I have a Smarty jr set for towing and I am lucky to get 14 mpg empty but towing my 8.7k toy hauler at 65 mph it gets a consistant 11 mpg towing out west where 6% grades are common, which I'm happy with. I've always wondered when others are saying they get 15 towing their 15k 5ers at 70 mph would I get that if I were driving that same rig? To me it's basically like asking the fisherman how big his catch was. If you chose to believe it that's OK with me.