Increase MPG? gear change or gear venders under/over drive?

elanmechanic · #1 (**permalink**) 10-22-2010, 05:41 AM

I just broke 100K and am looking for better fuel MPG. I've been researching GV overdrive and it looks good but not sure. I'd like to keep my 4.10's because I tow a 35' 5th wheel though the hills of New England and the power is good! Running empty is another story, good power and not good MPG. Is there a happy medium? Frustrated...

'05-6.0 L Dually.

**Dave** · #2 (**permalink**) 10-22-2010, 05:48 AM

Get some decent tunes. It would take several years to recoup your costs of installing a gear vendors setup

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