I get 24 mpg @ 57-60 mph on 89 octane,if running
61-65,i get 22,and 66-71 i squeak out 20.If i'm not in
a rush,i run 60.The 3.9 is plenty for me,since it
tweaked higher.
If you guys wanna run 70,75,& 80 thats fine.If you are
from California,and drive 70-80 in the rain,thats just
plain stupid(and ignorant).
I'll be heading east on I-105 out to Cajon Pass
tomorrow.I dont plan on driving like an arrogant
ass...
--- "Sevrence, Sean (S.J.)" <ssevrenc@visteon.com>
wrote:
>
> Hey Punch (and all)!
>
> Between my two trucks, I have a 1mpg advantage for
> my 3.9L when comparing
> the best tanks. They are both manual, 4X2s but the
> 3.9L is a RC vs. the 4.7L
> in a CC.
>
> 3.9L
> Best tank 21.8mpg
> Avg tank 21.0mpg
>
> 4.7L
> Best tank 20.6mpg
> Avg tank 19.5mpg
>
> These numbers are based on traveling at 75mph on the
> highway with the Extang
> tonneau cover. The 3.9L is more susceptible to the
> wind than the 4.7L. With
> both engines, the mileage is affected based on a
> tail vs. head wind, but the
> 3.9L is affected the most.
>
> I have no problems with either engine. I have found
> that following someone,
> within 5 truck lengths, helps the mileage. The
> racing term would be
> drafting, but they are very close and professionals
> on a closed course. Yes,
> at 75mph that range is closer than the safety
> guidelines (1 second for every
> 10mph -- remember that from drivers ed?!?), but
> every penny counts when we
> are only getting 20mpg with our babies ;)
>
> Basically, the less harsh the acceleration then
> better overall mileage
> numbers we will get. Thus, highway numbers are
> better than the city - good
> ol' Sir Isaac Newton's first law of
> physics....objects in motion want to
> stay in motion, objects at rest want to remain at
> rest.
>
> Sean
> '92 RC Sport 3.9L 5spd - 256,000mi!
> '01 CC SLT+ 4.7L 5spd 3.92 LSD Mobil-1 - 71,400mi!
>
http://www.twistedbits.net/WWWProfile/dakota/DnuuSncssJujU
>
>
> -----Original Message-----
> From: Punch [mailto:2punch.crash2000@AHM.com]
> Sent: Thursday, February 13, 2003 2:31 AM
> To: dakota-truck-moderator@bent.twistedbits.net
> Subject: DML: 4.7 vs 3.9 gas consumption?
>
>
>
> hmmm a friend of mine says he gets better mileage
> from his 4.7 then I do
> from my 3.9?
>
> anyone explain this to me?
>
> we have same gearing, he is a clubcab same as me.
>
> I average 400KM per tank, he says he gets 500-600KM,
> mixed city/highway.
>
>
>
=====
Digger
Madison,Wi
00' Dakota Quad Cab 3.9 R/T
Hobbies: Railfanning,Car/Truck Shows,Model Railroading(HO)
Homepage: "http://msn.communities/MyDodgeDakotaQuadCabsHome"
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This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:45:50 EST