Coast Resorts Open Roads Forum: Tow Vehicles: Diesel vs gas......................
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 > Diesel vs gas......................

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OhhWell

Florida

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Posted: 05/28/14 05:42am Link  |  Quote  |  Print  |  Notify Moderator

Steakman wrote:

06 dmax... Other than wear parts...no engine or trans issues whatsoever...close to 260,000miles

And I am continually amazed that this thread is still ongoing...LOL My Grandkids (whenever that happens), will likely read this sometime in their RV'ing life.

Just a note though:

MT truck at 8120 lbs (full Titan and full 30 gal slip), with EFI tuning:
21.3 mpg with me n the dog in the vehicle @ 124km/hr

Pulling the Chaparal, with full load of water and the wife added...
13.8 mpg @ 113km/hr Relatively flat roads...we shall see what happens this usmmer going to BC. But at this stage am quite pleased with mileage and performance since I dumped the Banks 6Gun PDA unit.

RPM Sweet spot for towing/and empty: ~1950 Rpm.

265/70R17's hit the pavement.


ya gotta love it.


What are those MPG numbers when converted to American measured gallons?


1998 bounder 36s V10 F53

Steakman

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Posted: 05/28/14 07:47pm Link  |  Quote  |  Print  |  Notify Moderator

DPF...

Strip your trucks of that junk...! that is If you can and are able to get away with that in whatever state you live. Nothing dumber IMO than adding emissions JUNK that does nothing but lower your mileage and the end result is that you burn more fuel. Seems kinda counter productive to me. And if I heard it right, you actually need to dump diesel into these things to burn all that crud too.!! Crazy.

But typical of Eco Zombies in Govt...more emissions control is better, yep and pigs can fly too.! LOL

Stk

* This post was edited 05/28/14 07:56pm by Steakman *


M'self and the Bride...of 32 yrs
'06 GMC DMax CCSB 594,545 km (368,890 miles)
2003 Citation 26RKS.


Steakman

Calgary, Alberta

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Posted: 05/28/14 07:51pm Link  |  Quote  |  Print  |  Notify Moderator

Quote:

..What are those MPG numbers when converted to American measured gallons?...


Those are US Gallons. I've never used "Imperial" which is a larger Gallon. (I Imperial Gallon is = to 1.2 US Gallons).

I don't even use the L/100km that most of the people up here use. Too old and snarly for that metric thing for most stuff... except speed.! [emoticon]


Without the tuning I was running stock at 19 mpg empty truck and towing around the 10.5 -11 range. Same speeds.

124km/hr = 77mph
113km/hr = 70mph

One day here in the next year I will be adding a Water Meth injection system to the truck..from all accounts from good friends, should add 2 - 3 mpg and lower EGT's plus it gives a steam clean of ones intake. Besides, windshield washer fluid (straight H2O + Meth - no detergent), is cheap from Costco.!

Stk

Sport45

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Posted: 05/30/14 10:20am Link  |  Quote  |  Print  |  Notify Moderator

Steakman wrote:

DPF...

And if I heard it right, you actually need to dump diesel into these things to burn all that crud too.!! Crazy.


So it's better to let all that "crud" just spew into the air?

You should think about moving to Manila. You'd be happy there. Lots of diesel crud in the air...

bkirkpatrick

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Posted: 05/30/14 01:20pm Link  |  Quote  |  Print  |  Notify Moderator

Sport45 wrote:

Steakman wrote:

DPF...

And if I heard it right, you actually need to dump diesel into these things to burn all that crud too.!! Crazy.


So it's better to let all that "crud" just spew into the air?

You should think about moving to Manila. You'd be happy there. Lots of diesel crud in the air...


Personally, I don't see anything wrong with it. However, there should be a minimum HP rating.


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FLYFA18

MI

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Posted: 06/01/14 09:14am Link  |  Quote  |  Print  |  Notify Moderator

Steakman wrote:


Pulling the Chaparal, with full load of water and the wife added...
13.8 mpg @ 113km/hr Relatively flat roads...
impressive, I see 12.5MPG with 12.7k 5er running 65mph and I have 646/1612 on the big tune thru my DSP5. I do tow with that tune on the flat roads


2006 LBZ CC, mike L built trans, HSP twins, 60 over, duel cp3, HSP manifolds.

2013 wildCAT

Steakman

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Posted: 06/04/14 01:49pm Link  |  Quote  |  Print  |  Notify Moderator

Quote:

...You should think about moving to Manila. You'd be happy there. Lots of diesel crud in the air...


My point my "friend" is this. The more mandated Emissions BS that is added to diesel trucks the lower the mpgs - plainly obvious. As a result you need more fuel to go the same distance.

Seems to me that is the perfect self defeating system. And just plain STUPID. A bit like your current POTUS.

As far as my rig is concerned, I dont have the smoke switch - kiddy stuff IMO. I run a FASS, OEM and Post OEM Fuel filter to eliminate as much as possible the particulates within diesel fuel. Currently the truck is tuned such that I get the most distance out of a set amount of fuel. Soon to become even more so with the addition of an H2O/Meth injection system...which results in an even a more complete Burn (up to 98%), of the available fuel pulse which in turn reduces fuel usage again with the end result of both reduced emissions and way better mileage.

So before ya start yapping about people needing to move, ya might want to do a little research and a little bit thinking...capiche.?

stk

* This post was edited 06/04/14 02:17pm by Steakman *

Steakman

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Posted: 06/04/14 01:59pm Link  |  Quote  |  Print  |  Notify Moderator

Fly..I too was impressed...but am also skeptical in a way. Yet do not recall a tail wind that day. I'll be doing a nice long one in BC through Rogers Pass in Aug. Reality will bite methinks.!

Just added a Hayden 2850 Fan clutch. It does it's job in keeping coolant temps below 195 with the 5er on...I was impressed. The OEM one wouldnt cut in till 215. So it might have an effect on mileage too.

We'll see. If I break even and end up back at 11-12mpg with a cooler motor and trans..I be happy.

Stk

rowekmr

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Posted: 06/04/14 03:38pm Link  |  Quote  |  Print  |  Notify Moderator

Is 646/1612 your hp/tq?
FLYFA18 wrote:

Steakman wrote:


Pulling the Chaparal, with full load of water and the wife added...
13.8 mpg @ 113km/hr Relatively flat roads...
impressive, I see 12.5MPG with 12.7k 5er running 65mph and I have 646/1612 on the big tune thru my DSP5. I do tow with that tune on the flat roads



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Sport45

Not far enough from Houston, TX

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Posted: 06/04/14 04:34pm Link  |  Quote  |  Print  |  Notify Moderator

Steakman wrote:


My point my "friend" is this. The more mandated Emissions BS that is added to diesel trucks the lower the mpgs - plainly obvious. As a result you need more fuel to go the same distance.
stk


I hear ya. But you have to understand that's the same argument we (me included) had against emission systems on our gas engines in the 70's. Lost power, used more gas, but you can't argue our air is cleaner as a result. And a gas engine today makes more power from less displacement and gets better mpg to boot. I, for one, don't wish to relive the "good old days".

If the engineers are forced to make the same leaps with diesel technology we will all benefit in the long run. In the mean time, more fuel doesn't equal more emissions. In this case it only means cleaner air.

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