Expected 97 MPG? - Ford Powerstroke Diesel Forum
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Old 01-31-2014, 05:25 PM
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Expected 97 MPG?

I'll start off by saying that I'm sorry to some of the veterans that have probably seen this question asked a thousand times on this forum. I've never owned a diesel before, aside from an old VW TDI that I had a six month stint with while my old Avalon was in the shop for a new engine after a valve decided to crap out on me. I've always wanted a truck, especially the older late 90 F250s, love the look and the styling overall. Would also be nice to stop taking the wifes Jeep and trailer when I need to haul my motorcycle up to Daytona. Recently a truck has appeared in a local dealer within my price range with few enough miles to consider going for a small loan.

I know these things are nothing like the VWs as far as mpg, but what would you say is an estimation on highway miles?

Its a 97 F250, 7.3L diesel, two door long bed, automatic transmission.
It has the overdrive as far as I know (I believe all of the automatics are 5 speeds?). 3.55 axle-ratio.
165k miles on the clock and I have a pretty dang light foot.
I will be driving mostly 45-50 around town (basically a highway here) and 70-75 on the long haul highway trips. Its got the dual tanks so I'm not concerned about the range.
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Old 01-31-2014, 05:37 PM
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I would hope to see 20-22
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Old 01-31-2014, 05:39 PM
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It's a four-speed overdrive, thus E4OD.

Regular or extended cab? 4x4 or 2WD? What part of the country? Mods?

Get a 6637 air filter and a 3" round downpipe, gut or decommission the cat, and if you still keep a light foot, it'll help fuel economy. 20+ MPG is not out of the question with the 3.55(s).
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Old 01-31-2014, 06:32 PM
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Welcome to the org

Bone stock i would say 17-18, keep in mind if you were to travel at 67~70 (2000 rpms) you would see higher economy numbers
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Old 01-31-2014, 07:19 PM
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Quote:
Originally Posted by madpogue View Post
It's a four-speed overdrive, thus E4OD.

Regular or extended cab? 4x4 or 2WD? What part of the country? Mods?

Get a 6637 air filter and a 3" round downpipe, gut or decommission the cat, and if you still keep a light foot, it'll help fuel economy. 20+ MPG is not out of the question with the 3.55(s).
Florida. Flat, Gulf Coast. Only hill is a highway on/off ramp .

Its the regular cab with a long bed.

I'm 95% sure its 2WD. No mods, it's completely bone stock, other than a aftermarket Pioneer radio.

I figured if I keep it below 70mph on the highway, I could easily so 18+ mpg. But, just like any diesel, they seem to vary greatly.
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Old 01-31-2014, 07:28 PM
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Below 70 20+ is easy especially with minor mods to increase air flow both in and out
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Old 02-03-2014, 09:03 AM
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Solo, I get 21mpg @70mph on the Interstate. Towing a 6000 pound Jayco travel trailer, I get 14mpg @60mph. This is a 1996 3.55 auto, long bed, extended cab loaded to GVW when towing.
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Old 02-03-2014, 04:07 PM
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my father has a stock 2wd auto excab with the auto and 3.55s gets 22 empty on the highway at 65ish

i have a 4x4 excab shortbed with a 5 speed and 3.55s best i do is 19 empty on the highway (intake, exhaust, chip)
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Old 02-04-2014, 01:57 AM
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Thanks for all of the responses guys, really appreciate it.

I took a look at the truck in person yesterday and it has over 200k on it, but the engine seemed to look and feel in pretty good shape. No weird noses, no smoke coming from anywhere, and no smells of leaking oil anywhere. I get to do a test drive on Wednesday. Anyone have any ideas what to look for during this? I was planning on checking more extensively for an oil/fluid leak of any sort, trying to get underneath it and look at any bad rust as well. I can't exactly take it to a mechanic due to time restraints but what would be important things to look at?

I know regardless there will be certain things that need to be replaced upon purchase of a truck with over 200k on it.
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Old 02-04-2014, 04:24 AM
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Check turbo fins for pitting
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