Yes the libby is not ideal but that is all I have The trailer is in the weight spec for the libby. But Towing at 55 mph it felt like I am in control and 55 mph is right there where most people tow so I am happy.
I used to drive 70-75 mph. I got between 5-6 mpg on my 8.1 GMC Sierra 2500HD. And, I had lots of tire trouble tread separations and blow-outs. I now drive between 60 - 62 (where my Allison shifts to over-drive), and I now get in the range of 8.5 - 9 mpg, and I haven't had any tire trouble in a while. Not sure if the tire trouble was the speed or switching to Michellin XPS Ribs, maybe both. Just traded for a new Open Road with load range G tires(yes I know about Pilgrim), and I'll see how the mileage and tire issues go.
At any rate, slowing down made a near 50% difference in fuel mileage. That is definitely something to be considered. IMHO Slow down, enjoy the scenery, and you won't have to stop as often for fuel, which will make-up for much of the little time lost by slowing down.
Obviously road conditions dictate a lot, but generally, on interstates I'm about 65 mph (though on our recent trip out west, the truck seemed to settle in at 67 mph), on other highways, usually not more than 60-62 mph, again depending on lots of factors. Sometimes slower...
dhamblet wrote: I tow at the speed where the RPMs of my motor make the most power (and best mileage) 1900RPM or about 59MPH. I try to stay with the trucks in the right lane on the interstate unless they are running fast. I don't like to cause a rolling traffic block by driving too slow if traffic is heavy.
I do the same. My DMax seems to run best about 1700RPM which is about 100KM/h (about 63MPH)
Helen & George VE3INB and Max (Bichon Frise) 06 Silverado LT 2500HD D/A 2006 Crossroads Cruiser CF30SK
Prodigy Brake Controller
16K Reese Slider with a Bedsaver
90 - 100 kmph/55 - 60 mph. The truck will almost always stay in OD at these speeds and returns my best average gas mileage at just over 10mpg. I'm not in a hurry I'm going camping!
I usually try to stay around 65, but on our way home from the beach this weekend I kept it right about 73 most of the way (~250 miles). Still got 8mpg out of my 8.1L which I thought was pretty good.
last trip i stayed right around 60 to 63 mph, got 13 mpgs, last year i was towing at 65 to sometimes 75 , getting a low 10 mpgs, more layed back this year, retired, no hurrys, diesel is starting to come down here to 4.40 a gallon now, going on a 2 weeker next week, gonna keep it 55 to 60.
2002 f350 crew cab short box, leer canopy, tinted windows, 3 inch level kit, 315 toyo mt tires, 8 inch nitto rims, superchips 1805 flashpaq tuner, afe stage11 intake system, 4 inch turbo back exhaust, auto meter guages, pulls our 2004 komfort 27ts tt.
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