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Old 10-13-2020, 12:19 AM   #10
RACarvalho
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Brand: Thor Motor Coach
State: Indiana
Posts: 31
THOR #19887
Quote:
Originally Posted by jannnda View Post
2600 rpm at 65mph? On my 31Z (V10) at 65mph I am just a little over 2000 rpm. I also have never gotten 8.5 mpg.
Really nice looking rig BTW.
If you check the V8 torque curve, 2600 rpm is where a steep increase in torque curve starts to flatten which, to me, is a desirable point to set the cruise speed.
I had no problem to keep 70mph or even 75mph but based on previous experiences, fuel consumption increases a lot above 65mph and so does stress (at least to me) on passing semis all the time so i set it to 65 and "forget"...
Our next trip will be to Florida Keys in December and we will be towing a car so that will be interesting to see...

I expect to lose up to 1mpg towing a car (with kayaks on top and bycicles(5))... But I hope it will be only 5mpg loss for our car has a really good rolling ....
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7.3L V8
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