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Home » Public Forums » GMCnet » [GMCnet] What is the best fuel economy obtainable from a GMC Motorhome?
[GMCnet] What is the best fuel economy obtainable from a GMC Motorhome? [message #241053] Sun, 23 February 2014 20:19 Go to previous message
Chris Orr is currently offline  Chris Orr   United States
Messages: 29
Registered: February 2014
Karma:
Junior Member
I've just joined this mailing list in order to get some technical
details from owners who may have performed fuel saving modifications. I
am interested in getting a motorhome and have considered the GMC
Motorhome for it's spaciousness and contemporary and clean-lined design.
It's a very stylish vehicle even in 2014! I've read somewhere that
adding fuel injection and modifying the top gear ratio will improve the
economy well over the notorious 6-8 mpg I've read about. If anyone has
done this, what real world MPG ratings have you had after mods? By mpg,
I mean miles per American gallon, not the imperial gallon.

Apart from the above mods, is there a diesel engine that might fit this
coach? If so, has anyone done it and what is the real world MPG for a
diesel engine. In Australia, many RVers use a Toyota Coaster diesel bus
which can be imported. Of course it's not as lovely as the GMC, but it
does have a fuel economy of 12l/100km or 20MPG (American gallon), which
is only 1/3 the fuel consumption of the GMC. Is this possible to achieve
with the GMC, with its double axle rear wheel?

Thanks,

Chris.
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