MPG using a No Gallons and trip

kingofl337 · **Posted:** Mon Sep 11, 2006 8:14 pm

Has anyone gotten better then 24mpg using a calculator to figure out
MPG using actual amount put into the tank and trip miles?

rs4mtnitro · **Posted:** Mon Sep 11, 2006 8:17 pm

I hand calculated 26 mpg on a 300 mile trip at an average of about 70 mph.

vwbill · **Joined:** Wed Dec 28, 2005 6:13 pm **Posts:** 17

I had one tank of 27.5 and another of 26.3, but majority are 24.

Milner · **Posted:** Mon Sep 11, 2006 9:18 pm

What size tires are you guys running....I would like to bump up a size or two, but dont want to hurt the milage too bad....

oldnavy · **Posted:** Mon Sep 11, 2006 9:41 pm

33.7 MPG with 41 PSI nitrogen filled OEM 225/75/R16 Goodyear tires, running 68/70 MPH on interestate running B5 49 cetane fuel. Most short trips were 27/28 mph due to driving 75/80 MPH range.

litton · **Posted:** Mon Sep 11, 2006 10:01 pm

24.5 at 75 (hand calcualted) (26 corrected for odo error), stock tires at 38. Remember you probably have a 6% error in your odomotor. I expect this to improve as the engine breaks in...I am now at 1600.

DarbyWalters · **Posted:** Mon Sep 11, 2006 10:17 pm

33.7 with psi at 38...at 68 miles per hour...have duplicated three times from San Antonio to Austin and back...In town with constant stop n go...20-21

oldnavy · **Posted:** Mon Sep 11, 2006 10:27 pm

DarbyWalters wrote:

33.7 with psi at 38...at 68 miles per hour...have duplicated three times from San Antonio to Austin and back...In town with constant stop n go...20-21

About the same here in town pretty much.

I did give wrong PSI, it is my Magnum that has the 41 PSI and the wife's Jeep is 38 PSI, with both vehicles running nitrogen filled tires.

Cowcatcher · **Posted:** Mon Sep 11, 2006 10:35 pm

There can be so much variation from one fll to the next on a diesel even if you are patient. I have been patient a couple of times and hand calculated against the EVIC finding no significant difference. If I was not patient on the fill or I forgot to calculate my odometer error I would get significantly different results on hand calculation and they would not be as reliable as the EVIC.

My results are a little under Darby for long trips, about 32 MPG at 38 lbs of air.

oldnavy · **Posted:** Mon Sep 11, 2006 10:39 pm

Cowcatcher wrote:

My results are a little under Darby for long trips, about 32 MPG at 38 lbs of air.

Air!!! Who uses air anymore???

Cowcatcher · **Posted:** Mon Sep 11, 2006 10:42 pm

oldnavy wrote:

Cowcatcher wrote:

My results are a little under Darby for long trips, about 32 MPG at 38 lbs of air.

Air!!! Who uses air anymore???

I am full of it........mostly hot!!! :lol:

oldnavy · **Posted:** Mon Sep 11, 2006 10:46 pm

Cowcatcher wrote:

oldnavy wrote:

Cowcatcher wrote:

My results are a little under Darby for long trips, about 32 MPG at 38 lbs of air.

Air!!! Who uses air anymore???

I am full of it........mostly hot!!! :lol:

No, that is methane. :lol:

Cowcatcher · **Posted:** Mon Sep 11, 2006 10:51 pm

How much N can you compress into a spare carry tank Oldnavy? There is a post in the general section about using CO2 but I know many are switching to N for road use.

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

is nitrogen worth it? it just keeps the pressure more constant right?

jakemoore · **Posted:** Mon Sep 11, 2006 11:23 pm

i get 21-23 mpg no matter what. i wish i could do better. roof box or no, drive like jackass or grandma, in town or on highway. it doesn't matter. only towing a completely overfull uhaul brought me down to 17.

jake

jakemoore · **Posted:** Mon Sep 11, 2006 11:41 pm

litton wrote:

Remember you probably have a 6% error in your odomotor. I expect this to improve as the engine breaks in...I am now at 1600.

How do you know? And is it a good 6% or bad? Do we all have it?

Cowcatcher · **Posted:** Tue Sep 12, 2006 12:10 am

To get the best mileage, IMHO, you need to get your truck above 10K miles, you need to get above 64 MPH in OD, you need to drive above 58 MPH or you will drop a gear and you need to stay under 75 MPH or wind resistance will kill you.

Several here with '06 domestics have repeatedly recorded 6% odometer errors with it reading slow. can't vouch for export or '05. Apparently there is a speedometer error to although not as great.

s_allcroft · **Posted:** Tue Sep 12, 2006 8:43 am

31.4 on long trip to Virginia. 40psi.. Stock Tires.... Loaded... 2000-2100 rpm

Normal... 25-26 mixed driving

DarbyWalters · **Posted:** Tue Sep 12, 2006 10:24 am

TDI4BY wrote:

is nitrogen worth it? it just keeps the pressure more constant right?

Pretty much that is the benefit...does not expand as much as air when heated...

Crazy racers used to try helium to "lighten up" thier unsprung weight...LOL

cerich · **Posted:** Tue Sep 12, 2006 10:31 am

23.5 to 24.5 at 75-80 highway, always.

38psi in stock goodyear st's, Will be putting on Grabber AT2's in 225/75/16 tommorow.

MPG using a No Gallons and trip

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