Does, or has, anyone used this? How accurate are the MPG calculations? This T660 has one on it and I went online for the manual so I could reset the trip/mileage data. With Cummins getting poor fuel mileage compared to my DD15, I'm going to be watching it with an eagle eye and adjusting my driving habits some, I think. I've read on here that the ISX likes 1450rpm, but it seems this one prefers 63mph...(ugh).
I suppose I should mention I'm a flatbedder hauling mostly farm and construction equipment.
Road Relay 4
Discussion in 'Kenworth Forum' started by HoneyBadger67, Dec 17, 2018.
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