Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-30-2013, 03:53 PM   #1
cwf
Rivet Master
 
cwf's Avatar
 
1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 5,934
Images: 2
Fuel quality

K.. I have always used "car" pump diesel... This being Thanksgiving weekend, the car pumps were swamped, so I fueled with truck diesel pump.

My fuel mileage jumped from 11.5 to 14/13.9.....

Really????? I can't explain....
__________________

__________________
Peace and Blessings..
Channing
WBCCI# 30676
cwf is offline   Reply With Quote
Old 11-30-2013, 04:01 PM   #2
4 Rivet Member
 
RUMSHIP's Avatar
 
1988 32' Excella
Bonita , California
Join Date: Dec 2006
Posts: 325
Images: 16
Usually the truck pumps are under a higher pressure for a larger volume. I wouldn't think the grade would be different.
__________________

__________________
Happiness only real when shared.
Christopher Johnson McCandless
2/12/68 - 8/18/92
RUMSHIP is offline   Reply With Quote
Old 11-30-2013, 04:32 PM   #3
Rivet Master
 
switz's Avatar

 
2014 31' Classic
2015 23' International
2013 25' FB International
Apache Junction , Arizona
Join Date: Sep 2012
Posts: 4,799
Images: 8
May have more debris at the truck pumps because of the high volume stirring up the the big tanks.

Also, Love's has placards showing they can have 15% bio-diesel, so there is a fuel mileage degradation there just like with ethanol in gasoline. My 2012 Dodge Ram owner's manual states a maximum of 5% bio-diesel.
__________________
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC

TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell

2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels
switz is offline   Reply With Quote
Old 11-30-2013, 04:33 PM   #4
cwf
Rivet Master
 
cwf's Avatar
 
1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 5,934
Images: 2
Yeah, filling up was great! I exceeded my limit before I realized it!!!! Hahah

No, this was measured via pencil and mileage, not the mi-liar computer in the dash.

Curious... But I will try for a few full ups just for fun.
__________________
Peace and Blessings..
Channing
WBCCI# 30676
cwf is offline   Reply With Quote
Old 11-30-2013, 04:35 PM   #5
cwf
Rivet Master
 
cwf's Avatar
 
1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 5,934
Images: 2
Quote:
Originally Posted by switz View Post
May have more debris at the truck pumps because of the high volume stirring up the the big tanks. Also, Love's has placards showing they can have 15% bio-diesel, so there is a fuel mileage degradation there just like with ethanol in gasoline. My 2012 Dodge Ram owner's manual states a maximum of 5% bio-diesel.
Golly, I didn't even think about that. It was a Luvs... And I looked right at it.

Maybe their BIO is from rabbits instead of beef?
__________________
Peace and Blessings..
Channing
WBCCI# 30676
cwf is offline   Reply With Quote
Old 11-30-2013, 06:14 PM   #6
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,316
Quote:
Originally Posted by cwf View Post
This being Thanksgiving weekend, the car pumps were swamped, so I fueled with truck diesel pump.

My fuel mileage jumped from 11.5 to 14/13.9.....

Really????? I can't explain....
There aren't a whole lot of different grades of diesel. 5% biodiesel, 15% biodiesel, #2 diesel (what you normally get) and #1 diesel, which is a winter blend that is less likely to gel in cold weather.

But at any one truck stop or service station, they'll only have one diesel storage tank, and what they got is what you get, no matter which pump you go to.

So if your fuel economy improved and it wasn't just a math error, it's probably not the fuel itself that caused it.

My Airstream Interstate (MB Sprinter) can only take 5% biodiesel, but that's due to the DEF system to control emissions, not due to anything in the engine. The first-ever diesel engine, at the Paris Exhibition in 1900, ran on 100% biodiesel made from peanut oil.
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is online now   Reply With Quote
Old 11-30-2013, 06:46 PM   #7
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,408
Images: 5
Actually the first diesel engines (non-automotive) ran on coal dust. They were needed to power pumps to remove water from the coal mines. They were short lived because....well they were short lived. The dust ate up the cylinder walls and rings in short order. A huge failure, until liquid fuel was tried.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 11-30-2013, 07:15 PM   #8
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,316
Quote:
Originally Posted by dznf0g View Post
Actually the first diesel engines (non-automotive) ran on coal dust.
When? Where? I knew that Rudolf Diesel intended for his engine to run on coal dust, but never saw anything in print about whether that idea came to fruition. But peanut oil as fuel was pretty definite; see Recognizing Rudolf Diesel's foresight in celebrating Biodiesel Day - Biodiesel.org
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is online now   Reply With Quote
Old 11-30-2013, 07:48 PM   #9
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
The old purely mechanical diesels (the way it should be) would run on just about any type of oil. Diesel, vegetable oils, motor oil, biodiesel etc. It is funny that the DEF engines are supposed to be more green and they can't run full biodiesel.

Perry
__________________
perryg114 is online now   Reply With Quote
Old 11-30-2013, 08:03 PM   #10
Rivet Master
 
switz's Avatar

 
2014 31' Classic
2015 23' International
2013 25' FB International
Apache Junction , Arizona
Join Date: Sep 2012
Posts: 4,799
Images: 8
There is more debris in the truck stop diesel fuel in suspension than the less agitated car pumps at lower volumes. Big trucks have massive fuel filtration filters and engine oil filters.

Might I suggest that unless you have added adequate fuel filtration to the minimal system from the factory, you are more likely to have fuel issues with the truck stop fuel versus the local Chevron or Shell car station that sells diesel fuel.

I added a Cummins water separator filter coming out of the truck's new larger fuel tank into the stock Cummins separator/filter on the engine block. From that filter, I went into a Cummins two micron fuel filter. and then into the fuel rail.

I keep the receipts of each fueling detailing the date, time, and amount of fuel along with the address and the name of the dealer. In the event of a bad load of fuel, I can go back up the chain to have their insurer pay for the engine damage.
__________________
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC

TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell

2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels
switz is offline   Reply With Quote
Old 11-30-2013, 09:37 PM   #11
cwf
Rivet Master
 
cwf's Avatar
 
1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 5,934
Images: 2
Thanks again, Guys!! Certainly 'fuel' for thought...
__________________
Peace and Blessings..
Channing
WBCCI# 30676
cwf is offline   Reply With Quote
Old 11-30-2013, 11:42 PM   #12
Don't forget your cat nap
 
Ag&Au's Avatar
 
Port Orchard , Washington
Join Date: May 2009
Posts: 4,464
Images: 1
The rest of the story

The diesel in the truck pumps have a hydrogen additive. This is to compensate for the heavy large trucks. Therefore when you put it in a RV the lighter than air hydrogen lowers the effective weight of the vehicle. Because of this effect your gas mileage improves. Warning: Never also put it in an auxiliary tank or you may weigh so little that traction becomes a problem. I learned all this from an old trucker at a truck stop.

Ken
__________________
Ag&Au is offline   Reply With Quote
Old 12-01-2013, 05:25 AM   #13
Rivet Master
 
noreen&sal's Avatar
 
1981 27' Excella II
mays landing , South Jersey
Join Date: Nov 2009
Posts: 1,179
Images: 9
Quote:
Originally Posted by Ag&Au View Post
The diesel in the truck pumps have a hydrogen additive. This is to compensate for the heavy large trucks. Therefore when you put it in a RV the lighter than air hydrogen lowers the effective weight of the vehicle. Because of this effect your gas mileage improves. Warning: Never also put it in an auxiliary tank or you may weigh so little that traction becomes a problem. I learned all this from an old trucker at a truck stop.

Ken
Man, I havn't heard a good truck driver story like that in a real long time. Sal
__________________
Sal & Nora
Let us live so that when we die even the undertaker will be sorry. Mark Twain
AIR 42483
TAC N.J. 17
WBCCI 24740
noreen&sal is offline   Reply With Quote
Old 12-01-2013, 07:11 AM   #14
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,408
Images: 5
Quote:
Originally Posted by Protagonist View Post
When? Where? I knew that Rudolf Diesel intended for his engine to run on coal dust, but never saw anything in print about whether that idea came to fruition. But peanut oil as fuel was pretty definite; see Recognizing Rudolf Diesel's foresight in celebrating Biodiesel Day - Biodiesel.org

Just Google it. They barely do more than mention it as a predecessor to his oil burners. It wore out quickly and IIRC he couldn't regulate the fuel delivery well and blew the head off one, then gave up on it. He didn't invent the coal dust burner...some French (I think) dude did in the 1890s, as I recall, but it wasn't compression ignition. I am recalling all this from my first Diesel class in college, so bear with me.

Edit: brief story of development and coal dust here..looks like a 3 year experiment.

http://www.enginehistory.org/Diesels/CH1.pdf
__________________

__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:03 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.