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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Rear diff lube.

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Old Jul 27, 2007 | 03:29 PM
  #46  
warthog5's Avatar
warthog5
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Joined: Feb 2005
Posts: 208
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Its a wash. Slightly better with 3.55's...not even 1mpg though.
So what is your millage?
 
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Old Jul 27, 2007 | 04:31 PM
  #47  
Mr. M's Avatar
Mr. M
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Joined: Oct 2006
Posts: 843
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From: Redmond, WA
Originally Posted by warthog5
So what is your millage?
Strictly highway... 17 -18
Mixed city/highway 15-16
 
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Old Jul 27, 2007 | 04:35 PM
  #48  
Skandocious's Avatar
Skandocious
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Joined: Oct 2006
Posts: 4,816
Likes: 1
From: Davis & Newcastle, CA
Damn! That's pretty good mileage! I get like 11-12 on average with my 351.

Hey Mike did you install your gears yourself? How hard is it to do at home with ample tools and time?

Oh by the way, Sorry OP!
 
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