mileage

2009 FORD F-250
V8 • 4WD • AUTOMATIC
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THUMPER222
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Can ford program with their computer a 2009 F250 diesel outside the perameters to get better fuel mileage?
Feb 2, 2011 at 3:35 AM
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MHPAUTOS
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This is not really an option, if you over fuel to much you will get detonation and in a diesel this will result in piston failure rather quickly, the delivery system is set for optimum power and performance, i feel ford certainly will not do this, as it would void warranty, and private work shops trying to do this are dicing with disaster, i have re built a few diesels in my day that have failed due to this being tried.

Mark (mhpautos)
Feb 7, 2011 at 9:00 AM
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