What kind of mileage?

[powerstrokekiller]

big rig running gas? Show me pictures or tell me the model. I don't know about that. Sounds pretty stupid. Never seen a big rig try to pull up to a gas pump

[kevin C]

I am trying to decide between a F250 (1999 with 105K) with an automatic transmission and a F350 (2002 65K) with the 6 speed manual transmission. Both trucks are equipped with the 7.3 liter Powerstroke Diesel engine and are in great shape. Under the same driving conditions, will I get better fuel mileage with the 6 speed manual, and if so how much and will one transmission hold up any better than the other?

[turbotime]

Originally Posted by powerstrokekiller

big rig running gas? Show me pictures or tell me the model. I don't know about that. Sounds pretty stupid. Never seen a big rig try to pull up to a gas pump

Refering to the ever so commonly compared Triton vs. Powerstroke...

[powerstrokekiller]

Originally Posted by turbotime

Refering to the ever so commonly compared Triton vs. Powerstroke...

Okay thought you were talking about semis there for a second

[Hi-psi]

I get between 17-21 depending on how I drive. I expect to see this go up a little with the DP-Tuner "Econo" tune I installed last week. Takes MUCH less throttle to get the truck moving and up to speed now.

[longhorn236]

I am new to this forum and basically to the diesel world. I just bought a 99 f 250 and I am curious about the fuel types I live in Iowa so my guess is that the fuel is blended in the winter.
My, probably dumb, question is which fuel do I want to run most of the time.
I have read that the d2 has more lubrictiy so that sounds like the right one
the manual for the truck recomends either d1 d2 with no explanation of quality or benefit from either

Is one better for my truck than the other?... what are the up-sides and down-sides of each.
thanks. dg

[wiwaniuk]

Welcome, longhorn. According to my brother who drives a Peterbilt, n2 has more parafin in it, thus giving more lubricity. This is fine for all the time when the weather is moderate. However when n2 gets cold (below freezing somewhere), it can wax up in your filter and shut you down. In the winter months, most fuel distributors will blend some n1 into the n2 to thin it a bit. The n1 is thinner with less parafin, so it burns quicker. Anyone else?

[Worm Drowner]

A bit off topic but....

With a handle like Longhorn, I gotta ask, are you a UT grad?

Hook 'Em Horns!
Class of 1986

D2 does have more paraffin, thus more lubricity than D1. You will get better MPG with D2 as it has a higher BTU content than D1. D1 is used during the winter months in colder climates to avoid jelling. I've had my truck jell up on me a few times last winter. It's decidedly no fun if you're in a hurry. As far there being a distinct advantage to running D2 instead of D1 regarding engine wear, any effects are miniscule. Having jelled fuel is much harder on things like pumps and injectors than running D1.

BTW: No such thing as dumb questions. How else are you going to learn unless you ask? Enjoy the truck!

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Last edited by Worm Drowner : 11-07-2005 at 06:32 PM.

[longhorn236]

Thanks for the info. I will have many more questions I don't know if I am supposed start a new thread or something if I have a question. If I am please let me know.
But now, on to the next question which may be more relative I bought the truck with 126000 it looks like the manual calls for a rather significant service at this period I do not know if the 120000 service was done or not. I am curious is there a way of checking without just redoing everything?
It looks to me as if regular oil and air changes were done.

What about the k&n air filter, I hear that can really help the mileage and general health of the engine?

Regarding mileage I drove back from from Billings MT 785 miles at 78 mph and got 17.2 mpg I thought that was pretty good, is it?

Oh yeah, no connection to Texas: my first cow I ever bought was a broken mouthed skinny old Longhorn I named her Lucinda (lucy). We live in black cow beef country so the neighbors decided to call me ...you guessed it.
That was 10 years ago ...it just stuck...i guess dg.

[Rodslinger]

Welcome Longhorn! Like Worm Drowner said, there is no such thing as a dumb question here. We're all here to learn and enjoy the company of others who've PSD, or diesels in general.
If you have questions feel free to create a new thread - it'll get more attention that way, instead of being buried in an older thread. BUT you didn't do anything wrong by asking in this one.
As far as the K&N goes, I'll have to let someone who has one answer that but I'm looking into similar things myself. That mileage you got seems about right at 78 mph - that's probably about what I get at roughly the same speed.
Oh and glad you're not a Longhorn! Sorry Worm Drowner but your Horns are going to SLAUGHTER my Aggies here in a few weeks. :p