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Re: [GMCnet] Keeping it Real, 8 to 10 mpg [message #172672 is a reply to message #172458] Fri, 08 June 2012 22:43 Go to previous message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma:
Senior Member
For the 100th Anniversary Chevy show at GM Detroit I had to drive a new tandem axle Peterbilt (new computer controled Diesel with DEF) from Chicago to Detroit loaded front to back and bottom to top. Heavy truck. Droped off at GM and drove home empty. The difference on the engine trip computer was .4 MPG better empty. It's mostly that fluid (air) you are pumping out of the way as you try to go down the road eating up the energy.

John Lebetski
Woodstock, IL
77 Eleganza II
 
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