Is all diesel created equal? - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 10-27-2012, 03:41 PM Thread Starter
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Is all diesel created equal?

I went on a long highway trip (about 150 miles) and my mileage has been around 13mpg. Normally I get around 15 IN town. That seems like a sharp cutoff. Especially for a highway trip.

So is it the truck? Or is it because I bought the cheapest diesel I could find?

Also, I did not put diesel kleen in this tank, which I normally do, and my truck has 3.55s

Gerry

'97 CCSB f-250 4x4 auto, 6pos chip w/ canned tunes, AFE intake, 4 in exhaust, 3in dp, 3.55 gears,
Dana 60 rebuilt and waiting to be installed
184k
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post #2 of 5 Old 10-27-2012, 05:15 PM
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Kinda unlikely in TX but if you managed to get #1 diesel you would get 2-3MPG less than #2. It's hard to say with just one tank of diesel, just check your filters for now and if the mileage continues to suck on the next tank then start looking deeper for issues.

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post #3 of 5 Old 10-27-2012, 05:26 PM Thread Starter
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Well I fueled up at a Valero for 3.69, most other places in town were at 3.79-3.89, so I was wondering if there was a reason for the price difference.

Gerry

'97 CCSB f-250 4x4 auto, 6pos chip w/ canned tunes, AFE intake, 4 in exhaust, 3in dp, 3.55 gears,
Dana 60 rebuilt and waiting to be installed
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post #4 of 5 Old 10-29-2012, 08:43 AM
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idk what to tell ya. i almost exclusivley use valero and get around 19-20 mix city highway...

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post #5 of 5 Old 10-29-2012, 10:00 AM
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Also, as filling stations move to winter gas you will see a decline in MPGs.

Matt
'97
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, intercooler
-Irate: T-4 kit, IC pipes, 3" Irate Plenums, BASB Turbo
-Stage II trans.
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, ADRENALINE PUMP
-twin on-board air w/ 10 gal. tank

-Oh, and a 2015 F350 6.7L DRW 4x4

Re-pinning '97 Cali PCM to Federal
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