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Old 11-21-2008, 10:08 AM   #1
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Hubs locked Gas mileage?

Hi everyone,
I was wondering if anyone has tested gas mileage with the hubs locked. Will I get worst gas mileage if I leave them locked? And if so how much worst? I live in Montana and getting out all the time to turn them on when needed is getting "old".... But then I don't like to pay extra money for gas...
Thanks for the info!
Paolo
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Old 11-21-2008, 11:07 AM   #2
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It won't make much difference. Especially with an open differential.
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Old 11-21-2008, 03:17 PM   #3
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The only thing to watch out for is -- I've had diff fluid "puke" out the breather hose into my left-front wheel well when driving long distances at 70+ MPH.

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Old 11-21-2008, 04:18 PM   #4
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Garage
Plus slightly more wear and tear.
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Old 11-21-2008, 10:17 PM   #5
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Good to do it from time to time to keep everything lubed, at least that's the case for stock Ford Axles.

I doubt you'll see and impact in the gas mileage under real world conditions. It just can't be that big of factor compared to everything else.
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Old 11-23-2008, 07:02 PM   #6
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Thanks for all the good info! Will keep them locked...
Paolo
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Old 11-23-2008, 08:10 PM   #7
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Locking Hubs

marchesi ,
There will be a small decrease in your milage and the Hubs will not do well at sustained highway speeds ,foaming and the loss of your fluids can result . They are meant to be Locked at time's when you anticipate the lack of traction . this is the reason that you have this mechanical option . Although living in Montana during the Winter month's when driving condition's can be treacherous would probably be a good time to leave them locked .
Greggde
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