2003 Owners: Mileage Reports

[$BANKS$rupted]

no but i did for 150k on my 99'.

 

[Jeremiah]

Originally posted by $BANKS$rupted

no but i did for 150k on my 99'.

OK. I'll keep in touch with them. I assume you're happy with what they did to your '99?

 

[kbarlow]

Re: 373 or 410

Originally posted by b. ferrara

What are the rpms at

70 mph with the 373 and with the 410 thanks guys.

3. 73 = 2026 RPM

4. 10 = 2227 RPM

 

[Jeremiah]

Re: Re: 373 or 410

Originally posted by Jeremiah

This is Jeremiah. I think 70 mph is 2200 rpm in 6th gear. Can't tell you about the 4. 10. Will let you know for sure tomorrow about the other.

Kbarlow gave the most accurate information. I eyeballed the tach today and 2100 was where it was for 70, 2200 for 75.

 

[DIESELMAN]

6456 Miles, All sorts of driving, loads and Speeds.



351. 2 Gallons = 18. 38MPG.



Reality Check, My V10 would have used about 717 gallons at the local average stickup price of $1. 49 to $1. 67, thats $1162



I have spent only $484 on fuel.



I now have SAVED $678. So, my 34K+ investment is paying off better than my 401K

 

[jimnance]

Break in

The reason for driving hard at break in is to assure good ring seating. Within reason high cylinder pressure (read power output) presses on the rings harder which in turn forces them tighter against the cylinder walls. Anyway, the net result is you usually end up with better long term oil comsumption and compression.



Beware, sustained high RPM or lugging the engine are both bad for break in. A nice 70 MPH freeway run up and down some hills for a couple of hours would be ideal.



Contrary to popular belief, 90% of the breakin is done in the first 500 miles.

 

[Jeremiah]

Re: Break in

Originally posted by jimnance

The reason for driving hard at break in is to assure good ring seating. Within reason high cylinder pressure (read power output) presses on the rings harder which in turn forces them tighter against the cylinder walls. Anyway, the net result is you usually end up with better long term oil comsumption and compression.



Beware, sustained high RPM or lugging the engine are both bad for break in. A nice 70 MPH freeway run up and down some hills for a couple of hours would be ideal.



Contrary to popular belief, 90% of the breakin is done in the first 500 miles.

I should be in good shape then. The first 100 was climbing out of Denver. I've got 1000 on it now and am getting to drive to NW Arkansas for Thanksgiving. That'll be done at 70-75 mph. My problem is not having a load to pull (other than the truck, which weighs 7880 with me and two Portuguese water dogs sittin' in it.

 

[Big MAK]

[top]

 

[Greg Boardman-RIP]

I drove from Twentynine Palms to Las Vegas last week for the NFR. I got 18. 9 mg going 80 on cruise control most of the way... Still under 5000 miles.

 

[tpicard]

Greg,

I drove to Seattle and flew the NFR, I was guy having fun!!!!!

I got 17 mpg though, Quite an improvement for I'm very happy with that.

 

[jimnance]

My first around town combined with some freeway driving was 17. 8 MPG.



We live in a rural area, so true city driving will likely be lower.



This number is based on trip miles / gallons purchased.

 

[Greg Boardman-RIP]

On a regular tank, the wife will get 15. 8 around town and to work and back. Idle time when waiting for EGTs' is brutal on computed mileage. I bet we are getting closer to 20 mpg on hwy.

 

[RamThatStroker]

My parents 3500 4x4 with 570 miles on it is getting 17-18mpg with 70% city and about 30% highway. I always kid them that my 95 gets 19-22mpg on the same route



Joe

 

[Jeremiah]

Re: Re: Break in

Originally posted by Jeremiah

I should be in good shape then. The first 100 was climbing out of Denver. I've got 1000 on it now and am getting to drive to NW Arkansas for Thanksgiving. That'll be done at 70-75 mph. My problem is not having a load to pull (other than the truck, which weighs 7880 with me and two Portuguese water dogs sittin' in it.

Back from Arkansas and now have 4,000 miles on the 3500 6-speed HO. Getting 18. 5 mpg consistently, a tad less with a headwind, tad more with a tailwind. Curiously, the overhead computer reads 21. 5 mpg, or 3 mpg too high.



Does anyone else have this problem and if so, what did you do about it?

 

[mgonske]

As of the last fill, I was at 5119 miles and 309 gallons, for an overall average of 16. 5 MPG.



High tank was 17. 7 MPG; low (not counting a 6-gallon fillup) was 15. 7 MPG.



Mini Trip Computer tank averages have always been high, ranging from 0. 1 to 2. 1 MPG (again, if I discount two under-10-gallon fillups), usually somewhere in the one and a half MPG range. I don't see any way to calibrate it.



I don't think of myself as that much of a leadfoot, but it seems like no matter what vehicle I drive, I get considerably worse fuel mileage than what others claim for the same vehicle.

 

[jimnance]

The fuel computers in these seem to be less than accurate. My '99 has always shown my fuel mileage to be about 3 MPG better than actual. When I asked the dealer about it he said it was within normal specs and could not be adjusted.



My '03 seems to be much better. The computer has been showing only about . 3 MPG more than actual. I am

 

[jimnance]

Originally posted by mgonske

As of the last fill, I was at 5119 miles and 309 gallons, for an overall average of 16. 5 MPG.



High tank was 17. 7 MPG; low (not counting a 6-gallon fillup) was 15. 7 MPG.



Mini Trip Computer tank averages have always been high, ranging from 0. 1 to 2. 1 MPG (again, if I discount two under-10-gallon fillups), usually somewhere in the one and a half MPG range. I don't see any way to calibrate it.



I don't think of myself as that much of a leadfoot, but it seems like no matter what vehicle I drive, I get considerably worse fuel mileage than what others claim for the same vehicle.

Mark, I assume that your 3500 is a dually. I suspect that the additional weight of the dually and friction from the extra tires turning account for your poorer fuel economy. Considering mine is a 2500 your economy doesn't seem out of line.

 

[lschultz]

I got about 8600 miles on now. Been checking mpg since I got it. First tank(dealer)I did not check. Don't have my book with me but if I remember its been getting 19. ? I think two tanks I got a little over 20. ? As the miles add up its getting better No complaints on mpg.

 

[kkirkpatrick]

First fill up 15. 75, hope it gets better as the miles rack up. This was mostly highway at 65 to 70 mph.

 

[Jeremiah]

Originally posted by mgonske

As of the last fill, I was at 5119 miles and 309 gallons, for an overall average of 16. 5 MPG.



High tank was 17. 7 MPG; low (not counting a 6-gallon fillup) was 15. 7 MPG.



Mini Trip Computer tank averages have always been high, ranging from 0. 1 to 2. 1 MPG (again, if I discount two under-10-gallon fillups), usually somewhere in the one and a half MPG range. I don't see any way to calibrate it.



I don't think of myself as that much of a leadfoot, but it seems like no matter what vehicle I drive, I get considerably worse fuel mileage than what others claim for the same vehicle.

Mileage seems to be better at the higher altitudes.