6.7L Cummins Forum

Okay so here's what they say about using Biodiesel in our trucks and it's not a pretty sight at only 5%. But I did notice that it says that So I wonder why I can't use 20% as long as I adhere to those requirements? I need to see if I can't scrounge up those Documemnts.

The 2007 Ram Truck Cab and Chassis (DC) vehicle is equipped with a 6.7L diesel
engine. This vehicle is to use Ultra Low Sulfur Highway Diesel Fuel. Due to limited
availability of Ultra Low Sulfur Highway Diesel Fuel, during the initial production of this
vehicle, Low Sulfur Highway Diesel Fuel (500 ppm of sulfur or less) may be used

until Ultra Low Sulfur Highway Diesel fuel becomes readily available and fuel pumps that
dispense Ultra Low Sulfur Highway Diesel Fuel are required to be labelled as such. This is
expected to occur around

good quality fuel and follow cold weather advice supplied in the Owners Manual.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

Yea, I think I will stick to my plain ol ULSD for now.

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http://www.frappr.com/iboats
"JUST KEEP ON, KEEPING ON"
"Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, chocolate in one hand, martini in the other, body thoroughly used up, totally worn out and screaming "WOO HOO what a ride!"

I was wondering about Bio-Diesel...
Thanks for the information!

I too will stick with ULSD for now... sure don't want to screw up the warranty.

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RAM 3500 Cummins 6.7L Bluetec 6-SP Auto "Jake" 4x2

so what would any of you say would be the drawback of using red fuel......
i work construction and i can fill up with red fuel anytime for FREE.... what do ya'll suggest?

I'm not sure why Cummins recommends only 5%. Bio burns cleaner, 20% bio provides 25% fewer diesel particles and has better lubricity than any of the diesel additives. It just amazes me that this has not caught on better. If we reduced our Diesel Fuel importation by 20% that would be a big deal. Bio Diesel can be produced for $1.00 per gallon right now.
Check out this report.
http://www.nrel.gov/docs/fy06osti/39606.pdf

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7.5 3500QC 6.7CTD 68RFE Build date June 2007
Superchips tuner 3808, Boost/EGT Laser Gauge, Airaid cold intake

We can run a higher percentage Bio Diesel we just need to add an auxillery water stripper.

Quote:

A biodiesel fuel blend that is higher than 5% is not acceptable without additional fuel processing because these higher percentage biodiesel blends contain excess amounts of moisture which exceed the water stripping capability of the on-engine final fuel filter.

Should a higher
percentage biodiesel fuels be used an auxiliary water stripping filter will be required.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

Squid is right on with the information he is posting 5%bio stock,20%blend with additional fuel filter/water seperator. from what I have been told, the reason behind it is the fuel injectors/system on the 6.7L will be damaged by the bio-diesels bigger particles that pass through the fuel filter . as water and the faty acids in bio-diesel break down the paper eliments in the fuel filter they allow "holes " for bigger particles to fit through,more than the 4.5 -5 microns the injectors can handle , and that causes injector failure,and emissions problems..and so on,,.here in IL. the fuel ranges from none ,5%,11%,15%and up to 20% depending on where you go. I go to Mo. and get no bio ultra low sulfur for mine.here in Illinois our gas has 10% ehtenol, diesel most with bio-blends,but we are an agriculture type state with alot of corn and soy bean grown here. but the gas with 10% ethenol added is leaner a/f on the dyno and gets worse fuel mileage. I havent tested the bio-diesel to see its mileage differance, because I dont plan on running it in my truck ,the new dodge trucks built here in st.louis come filled with the 5% blend off the assembly line. but there is tons to learn with this new engine... I am ready, I think mine is great. hope we all learn more from each other and you have good luck with yours..

Steve, welcome aboard. Where in Missouri do you go?? Once lived in St.Louis.

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7.5 3500QC 6.7CTD 68RFE Build date June 2007
Superchips tuner 3808, Boost/EGT Laser Gauge, Airaid cold intake