Fuel Mileage - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 22 (permalink) Old 03-22-2006, 04:13 AM Thread Starter
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Fuel Mileage

I have a 2000 F-250 with a 6 spd and 4X4, I bought it about three weeks ago with 87,640 miles, I am at 89,100 now. The first tank i ran through it showed to be getting 17.2 mpg. While filling up with my second tank I installeed a K&N air filter. The second tank showed to get 18.6 and tonight Showed 20.53 mpg. No Tuner but the truck had a MPRB Exhaust when i bought it. This is my first diesel, but it seems to be just the opposite of my gas burner, seems the harder i run the diesel the better fuel mileage i get? Just wondering why?
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post #2 of 22 (permalink) Old 03-22-2006, 01:31 PM
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Are you going by the computer? If so then do some hand calcuations and make sure you fill up to the top of the neck and have the truck parked the same way (level, tilted ect) to ensure you get the same amount of fuel in the tank each time.

It honestly depends alot on how you drive your truck as to what mileage you get. If your truck is not staying warm then you'll be getting lower mileage so driving it a bit harder would get it warmer and give you better mileage.

My little brother has the same truck as a Crew Cab Longbed and gets around 15-17 on a normal tank but his drive to work is under 3 miles.

95 F350 Centurion Conversion Bronco (Crew Cab SRW) 4X4 4.10, Isspro Performax Boost, Pyro, & trans temp on the A-pillar, BDP Stage 1 injectors, Open air intake, Dpp Downpipe, Self built E4OD with parts from Racer-X, Tony Wildman Chip, Early '99 Intercooler.

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post #3 of 22 (permalink) Old 03-23-2006, 04:55 AM
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My grandpa had a '97 F-350. PSD, crewcab dually and 4.10. Never saw over 15mpg with his.

"Some people are educated beyond their intelligence."

'93 W350 CC, LE, 5spd, HTT modded H1C, 4" DE

Sold- '99 3500 Q/C, SO CTD, 4x4, 5spd.

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'92 W250, LE, CC, CTD w/ tweaked pump (SOLD)


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post #4 of 22 (permalink) Old 03-23-2006, 01:47 PM
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I've had my 2000 F250 for about a month now. I get right around 15 MPG on the nose as a daily driver. I towed my Jeep for the first time this weekend and got around 12 MPG towing. Not bad I guess, but I'd like to get those numbers a little higher.

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post #5 of 22 (permalink) Old 03-24-2006, 03:36 AM Thread Starter
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I don' t have the computer so i have been doing the calculations by hand. But my dad has a 2003 Duramax, we fueled up at the same place today and drove to our shop we showed to be off on our mileage he had 11.0 miles and I had 11.5 same trip. I could be off, may not be accuarate anyways. Thanks guys.
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post #6 of 22 (permalink) Old 03-24-2006, 04:02 AM
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I get 17-18 in the winter and 18-20 in the summer, unless I have the 100hp program in, then 16 is average. The 100hp pgm does make me smile though!! :evil:

PSD #4 '95 loved it... '97 real POS...
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post #7 of 22 (permalink) Old 03-24-2006, 11:48 AM
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In my dad's truck stock we get around 17-18 and towing a 34ft 12,000 pound camper we get around 12-13, atleasts it better then a gas or V10 which would be getting like 5 mpg towing.

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post #8 of 22 (permalink) Old 03-24-2006, 02:01 PM
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if your odometer is off then you'll want to reprogram it, I presume that you can reprogram the PSOM like you can in the 94-97 trucks but i'm not sure.

To check it go drive down the iterstate and pay attention to the milemarkers or if you have a GPS you can use that as well.

BTW my '95 gets me 14-18 depending on where my foot is and what speed I'm cruising. w/ a 10-14k load I drop down to around 10-12.

95 F350 Centurion Conversion Bronco (Crew Cab SRW) 4X4 4.10, Isspro Performax Boost, Pyro, & trans temp on the A-pillar, BDP Stage 1 injectors, Open air intake, Dpp Downpipe, Self built E4OD with parts from Racer-X, Tony Wildman Chip, Early '99 Intercooler.

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post #9 of 22 (permalink) Old 06-04-2006, 01:55 AM
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Quote:
Originally Posted by jermort
I get 17-18 in the winter and 18-20 in the summer, unless I have the 100hp program in, then 16 is average. The 100hp pgm does make me smile though!! :evil:
3.55/3.54 gears? My grandpa had 4.10s in his.

"Some people are educated beyond their intelligence."

'93 W350 CC, LE, 5spd, HTT modded H1C, 4" DE

Sold- '99 3500 Q/C, SO CTD, 4x4, 5spd.

Traded off- '97 3500 C/C, 4x4, CTD

'92 W250, LE, CC, CTD w/ tweaked pump (SOLD)


"Obama = Hoax and Chains"

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post #10 of 22 (permalink) Old 06-05-2006, 03:21 PM
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well the one i am buying the guys stated that if he keeps it under 2500rpm (55-65 he gets 18 and if he does 75-80mph he only gets 15, and towing a 20 ft trailier with a skid steer he looks at 11-13 so i am assuming that over the 2500 rpm mark is where the turbo is really working and thats where the lileage goes??? guess we will see if that oasis report turns up clean, also think gears are really going to affect your turnout, not sure how much but there are more than a few gear sets that get put with TD's
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