diesel mileage

[RobertN]

What kind of mileage are you getting with your diesel?

I have a '01 Dodge longbed xcab 4x4 Cummins with auto and 4.11 gearing. I average between 13.5 and 16 depending on if I am babying it or not while running empty. If I really baby it on the flatlands, I get 16-17. The truck just turned 25,000 miles. It has stock tires; in fact the truck is bone stock. I do live in the foothills, so I'm not always on level ground.

When I got it, I had hoped for 18-20ish while babying it. I do not know if that was realistic, or wishful thinking.

What kind of mileage do you get with you Diesel pickup?

 

[njrqs]

Robert

Can't even try to compare our Imperial gallons and my different truck, but I can offer this.......

My smaller diesel 2.8L 4 cyl with a turbo is working flat out to keep my truck at 100km/hr. Compare this to a bigger diesel or petrol and they may not be working as hard.

So I don't get real good economy out of mine. If I babied it, maybe it would be much better, but I want to keep up with the traffic.

Hence I have just ordered a newy with the V6 petrol motor.

Cheers

 

[Anonymous Poster]

94 Dodge Cummins -
Standard cab 5 speed 4x4 3.53, 105k miles, gets 20-21 constantly even when my foots in it or not! /w3tcompact/icons/tongue.gif

Towing I get 16-17 towing 7k, trailer, tractor, loader, rotary cutter.

Then again my muff and cat ran away together /w3tcompact/icons/shocked.gif

No mods, bone stock too..... str piped... ahhh music to my ears! /w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif

 

[Anonymous Poster]

Btw: go over to <font color=blue> <A target="_blank" HREF=http://www.turbodieselregister.com>http://www.turbodieselregister.com</A></font color=blue>
check out the forums, literally the master forum for Dodge Diesel owners. Beware! Its like joining the dark side over there... hahaha /w3tcompact/icons/laugh.gif/w3tcompact/icons/laugh.gif/w3tcompact/icons/laugh.gif/w3tcompact/icons/laugh.gif/w3tcompact/icons/laugh.gif

You'll be bombing before ya know it /w3tcompact/icons/wink.gif/w3tcompact/icons/wink.gif

More HP and better mileage before ya know it... /w3tcompact/icons/cool.gif

Btw: Heres some easy Mods for ya,
- Remove Silencer Ring (more turbo whine, no hp value) /w3tcompact/icons/grin.gif
- The airbox tube that goes into fender, remove it ick
- I cut my airbox so the side hole is the entirely open, man does it turbo sing now
- straight pipe it, cut off your Resonator and muff (made a world of difference for me) /w3tcompact/icons/love.gif/w3tcompact/icons/love.gif/w3tcompact/icons/love.gif
- run synthetics in the diff's and transfer case
- slide your plate forward (more info on there site)
- turn your smoke, fuel screw up it 12v.
- add gauges EGT, Auto Trans Temp, Boost!! a must!
- Check out <font color=blue> <A target="_blank" HREF=http://www.genosgarage.com>http://www.genosgarage.com</A></font color=blue>
- change to Fleetguard microglass filters avail at Geno's.

Lots more to tell! /w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif/w3tcompact/icons/grin.gif

 

[Kodiak]

I think the trouble lies in your 411 gearing. Low gears require more engine revs to turn the axle enough revs to reach required speeds. More engine revs = more fuel. Solution A higher gear ratio such as 3.73s or such. Change ring and pinion gears(both axles), or invest in a gear splitter for the tranny.

 

[TedLynn]

Kodiak diagnosed you mileage problems. My experiecne is 15-17 everyday driving and 19-20 interstate at 65MPH. Important to keep RPM's at or under 2000 for mileage. Put 35,000 on my 01 Powerstroke before trading it on an 02 Duramax (now has 11,000). I believe both had/has 3.73 gearing. I don't really notice any difference in mileage, but the Silverado sure drives better. Ted

 

[DrDan]

I'm getting 17 to 18 unloaded and 13 pulling a 7' X 16' enclosed utility trailer with about 7500 GVW. Running a 94 Ford F-350 with IDI 7.3 liter turbo charged, 3" hi flow exhaust, intercooler, turbo upgrades to larger exit port, Interceptor shift point controller. Pyro, tranny temp, boost gauges in pillar mount. Love it! Runs really well. I have Amsoil everywhere and I believe my diff's are 3.53 I think them 4.11 are too low for good milage.

DrDan

 

[jyoutz]

My truck: 99 Dodge Ram 2500, stock Cummins 24 valve turbo diesel, 4 x 4, quad cab, long bed, 5 speed manual tranny, 3.55 gear ratio. On interstate driving, I get 19 MPG with the cruise set at 80 MPH (empty). For 2 lane HWY driving with grades, I get about 17-18 MPG. For heavy loaded trailers, I get about 14-16 MPH. And for round town driving, I get about 14-17 MPG. The auto tranny and the 4.11 gears are probably the reason for your poor fuel mileage (my guess).

 

[Worksmart]

'95 Cheby 3500(1 ton) dually, ext. cab, 2wd, 6.5l turbo diesel, 4spd auto, 4.10, 45,000 miles.........average 15mpg. Chuck

 

[AMP762]

If you want a higher gear ratio go with taller tires,gota change um anyway