10-17-2019, 11:13 AM
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#21
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Bus Geek
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,482
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
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Quote:
Originally Posted by wrenchtech
The best fuel mileage that I was able to observe on my recent trip was 7.7 MPG. On one leg, where I covered 300 miles between fueling stops, I observed 7.4 MPG. This was all open highway driving using cruise control. Oh how sweet it would be to get 10 mpg! If I understand what I’ve been reading, many diesel engines that are under a strict emissions control regime, can have their fuel consumption improved significantly by re-programming the ECM. As the later C7 common rail engines begin to fall out of warranty, I am hoping that some reasonably priced aftermarket tuning services will be offered in the marketplace.
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I suspect turning up the power level decreases the MPG.
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