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 Post subject: Total Average Fuel Mileage.
PostPosted: Tue Dec 04, 2018 1:00 am 
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Joined: Sat Aug 27, 2016 9:12 pm
Posts: 2505
Location: Oregon Coast Dairy Country. Land of stumps, dumps, and "Liquid Pumps"
This is not a one-tank or one-month thing.
NO EVIC.

Since getting my CRD on the road, I have recorded every gallon of fuel put in the tank, and the mileage at every fill.
I keep a logbook in the rig, and keep it current.
This is total miles over the last 2 years, divided by the total gallons.
This includes every trip, long or short, and every type of driving, from granny to aggressive, hours spend idling waiting for someone to finish shopping, and so far, 4 hours of dyno runs.
Everything

The engine is stock with a complete new top end 2 years ago.
Sasquatch turbo.
Yeti commercial (purchased) custom tune, and a sequence of tunes to get it here.

My 2 year total average fuel mileage is
24.3 MPG.

I'll wager that if anyone
1) has a relatively sound engine,
2) ignores EVIC and records real numbers and doesn't miss any,
3) has a moderately heavy right foot,
4) spends about 80% or more of their miles on pavement.
their real long term mileage will not be too far off that mark.

I guess I should add a few more possibly pertinent specifics as others have done.
These have been consistent the full time.

- All fuel purchased diesel, with Power Service treatment, Distributor treated, except 10 gallons of B5 when nothing else was available.
- Original trans swapped for 2010 Hemi trans a year ago
- Tires as listed in my sig. Rotated once. Kept at 32 psi
- All operation from sea level to ~5000 foot elevation.
- EGR deleted via Weeks kits.
- Stock diffs and gears.
- in-tank lift pump
- Cruise Control still not working.
- No lift. Stock face.
- Viscous Heater intact and working.
- Mobil1 TDT 5w-40
- Mann air filter
- Stock thermostat, still working correctly.
- EHD GM 11 blade fan / clutch.

_________________
'06 Lbrty Sprt CRD 150K

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauges

IDParts
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

YETI Custom Tune
Flowmaster 8325508
Carter P76611M
GM 12611872
Hayden 2986
GM 15976889
PATC Custom Billet
2010 Ram Hemi Trans
Sonnax 44957
Transgo kit
Cooper 51770


Last edited by GordnadoCRD on Wed Dec 05, 2018 7:26 am, edited 2 times in total.

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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Tue Dec 04, 2018 4:10 pm 
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Joined: Tue Aug 21, 2018 6:43 pm
Posts: 37
Location: Colorado
Mine is 23.5 lifetime average since I bought it new in 2005. Not EVIC numbers (didn't have one for a long time). Hand calculated every time.

_________________
2005 CRD, owned since new.
GDE Hot tune, 2.5" lift w/JBAs, 235/85 Duratracs, Weeks2 kit, Provent, Facet lift pump, Cat fuel filter


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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Tue Dec 04, 2018 6:32 pm 
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Joined: Fri Jun 22, 2007 11:43 am
Posts: 4962
Location: Green Cove Springs FL
I use fuelly.com to track mpg.
No evic, all hand calculated.
Even calculated and applied a correction factor to compensate for tire size vs odometer calibration.

I’ve logged 170,000 miles into fuelly.
Lifetime average = 24.8 mpg

I started out averaging just over 26 mpg.
But over the years it has slowly dropped.

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U.S. Army Retired


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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Tue Dec 04, 2018 6:59 pm 
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Joined: Tue Sep 04, 2018 5:53 pm
Posts: 196
Location: Central Iowa, USA
14 months of data with miles traveled adjusted for my tire size: 21.0 :(

I blame a <10 mile commute and having to accelerate quickly from a dead stop to 70mph on a cold engine every morning. I just changed my u joints and one was trash, maybe that will help?

_________________
2005 KJ CRD SOLD in 2021
V6 Airbox, Samco Hoses, Provent
Weeks 1&2, Thrush Glasspack
Facet Fuel Pump, Secondary Fuel Filter
ARPs, 188 Degree Thermostat
GDE Eco Tune Full Torque
OME 1.5", JBA A-Arms and Top Plates
245/75/16s, Spidertrax


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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Tue Dec 04, 2018 11:02 pm 
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Joined: Tue Dec 08, 2015 10:46 am
Posts: 180
I have spent the past two years driving 650 miles per week over the same route (HWY 401 for those Canadians). Mileage hand calculated every tank. Averaged 25.6, granted this is all highway miles, but at 75-80mph. My CRD is similar to the OP's except with a GDE max torque tune. However, I do have a HDS thermostat which keeps the engine at a steady 203 degrees F. I am just coming up for the second timing belt change. The engine has never been apart other than the first timing belt change. Regular maintenance with 5W40 T6 Rotella.

_________________
2006 KJ Sport CRD, 2006 KJ LTD CRD, 2013 Subaru BRZ 6spd., 1994 Ford F150 XLT, 1969 Dodge Charger R/T 4spd. (Yes it's a Hemi).


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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Tue Dec 04, 2018 11:04 pm 
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Joined: Sun Aug 05, 2018 9:53 am
Posts: 42
lifetime miles of drivership on CRD==411.00 (3 weeks)

egr delete
thermostat delete--inline 160 F currently in trial
mechanical fan delete
wusskus heater delete
airbox delete--k and n type in use
fuel heater delete
block breather to trap
airconditioner delete
block heater in use even on 90 deg F day

many pluggyinconnectors not plugged in

one tank lifetime fillup==24.00 mpg
hoping for better

pulsenpal


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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Sun Dec 09, 2018 11:00 am 
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Joined: Thu Feb 18, 2010 12:12 am
Posts: 228
Location: Alaska
Completely stock my 2005 got 23mpg in the summer and 19mpg in the winter until the F37 reflash. After that I got 19mpg summer, and 14mpg winter. I'm hoping the GDE eco-tune will help whenever I get it back on the road.

Best tank ever was 25mpg, once.


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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Sun Dec 09, 2018 6:39 pm 
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Joined: Thu Apr 16, 2009 2:17 pm
Posts: 1334
Location: Cle Elum, Washington
Best Ive ever gotten was 40mpg twice on highway road trips.

_________________
2006 KJ CRD Ltd - Suncoast, GDE Eco, EGR Delete, After market T-Stat, Skid Row skids, V6 airbox, 2.5" Turbo back
2005 KJ CRD Sport-Suncoast, Transco, GDE Hot-GDE Trans, EGR Delete, Skid Row skids, V6 airbox, 2.5" Turbo back, After market S-Stat
1987 Suzuki LWB Samurai -diesel powered, custom 4 link coil suspension 38.5 SX Swampers


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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Sun Dec 09, 2018 11:20 pm 
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Joined: Sat Aug 20, 2011 9:44 am
Posts: 98
Location: Cleveland, OH
My 4.5 year, 45k mile average since adding GDE full tq eco tune is 22.94. My odometer is off by right on 10% so I make true MPG to be ~25.

I use opti lube xpd in every tank and besides the slightly larger tires and tune am stock. I notice at least a 3 mpg difference between summer and winter fuel. I can never get 400 miles on a tank in winter. Got close to 600 once in summer on a road trip. I think the entire trip was downhill with the wind at my back. :D

_________________
2006 Liberty CRD - the commuter. GDE Full Tq Eco, Samcos, etecno GPs

2006 GMC Sierra Duramax/Allison - the toy
RIP - 1995 Tahoe 6.5 TD
1990 JD 332, yep, the mower is a diesel too


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 Post subject: Re: Total Average Fuel Mileage.
PostPosted: Mon Dec 17, 2018 12:00 am 
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Joined: Wed Jun 06, 2012 11:20 pm
Posts: 118
Location: Fargo, ND
Been tracking mileage on "FUELLY" since I bought my CRD in 2012. It's basically stock but have been running some sort of GDE tune since shortly after purchase. My mileage is not as good as others but I blame that on my commute being either in-town driving or going 80 on Interstate, not to mention cold winter temperatures and autostart :mrgreen:.

Image

_________________
2005 Liberty (KJ) CRD Limited - GDE FT ECO-Tune, Custom Trans Tune, Euro TC, 5V Steel GP, Weeks Stage 1&2, ARP Studs
1998 Cherokee (XJ) Classic - 30" Discoverer STT's on 2" Lift, SYE, 8.25 w/Aussie Locker
1984 CJ7 (CJ) - Stock
2011 VW Routan - Wish it had a CRD!
2011 Dodge Durango - HEMI, 4WD, Factory Tow Hook & Skid Plates


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