Biodiesel ok to run? - Diesel Forum - TheDieselStop.com
6.4L Power Stroke Engine and Drivetrain Discussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008-Up Super Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.4L Power Stroke engine.

 
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post #1 of 9 (permalink) Old 04-18-2010, 11:57 AM Thread Starter
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Biodiesel ok to run?

Curious if the Biodiesel is safe to run in my truck. And is it safe to run with the Gryphon programmer? I dont know much about Biodiesel and its octane rating but I just filled up and I think I should have done some research first....
Thanks for any input.
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post #2 of 9 (permalink) Old 04-18-2010, 06:53 PM
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The owner's manual for my 2010 says no more than 5% biodiesel.

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post #3 of 9 (permalink) Old 04-18-2010, 09:37 PM
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Originally Posted by 08TONKA View Post
Curious if the Biodiesel is safe to run in my truck. And is it safe to run with the Gryphon programmer? I dont know much about Biodiesel and its octane rating but I just filled up and I think I should have done some research first....
Thanks for any input.
My 2008 F250 6.4L owner's manual says nothing over 5%. It also says programmers are no bueno.

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post #4 of 9 (permalink) Old 04-19-2010, 08:30 AM
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nothing over 5%, you need to use the severe maint schedule as well. Expect more regens and don't over look changing those fuel filters more often.

Lower MPG's as well to boot.

So stay away from it. cost the same and you use for of it.

No win there.

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post #5 of 9 (permalink) Old 04-21-2010, 08:06 PM Thread Starter
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Ya, noticed my MPG's took a dump! Down almost 2 MPG's. Never again....
Thanks for the info.

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post #6 of 9 (permalink) Old 12-21-2018, 09:35 AM
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Can anyone explain why Ford says no more than 5% bio diesel? Iím starting to run into a huge problem here in Southern California - tons of stations are switching to B20, which the sticker states is 5-20% biodiesel. I really need to know why we are limited to 5%. And if that limitation changes when a truck is DPF deleted. Is it just to save the fuel filter? Or will it actually damage the engine - lubrication or injection issue?

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post #7 of 9 (permalink) Old 12-21-2018, 11:15 AM
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All older diesel engines were B100-compatible. Then standards set by both the Environment Protection Agency and California Air Resources Board, which came into force after 2007, required all diesel vehicles to meet stricter emissions. That meant diesel manufacturers had to reduce emissions of NOX and particulate matter to meet those of gas-powered cars. The way most manufacturers did this created a setback for the use of biofuels.
To get rid of particulate matter, manufacturers came up with what's called a DPF (diesel particulate filter). The DPF is placed in the exhaust system in front of the muffler and looks similar to a catalytic converter used on gasoline engines. It captures particulate matter in its inner core. Periodically, the DPF has to be taken up to high temperatures to burn off the soot it has collected. This is called regeneration. The idea is to inject fuel into the exhaust that has been vaporized, and when the fuel comes into contact with the DPF, it heats up and incinerates the soot trapped in the DPF. Squirting fuel down the exhaust? Gee….. what a great idea.
And here is where the pitfall lies for biodiesel. Most of the engine manufactures decided to inject fuel into the cylinders just after the cylinder fires and the exhaust valve opens. At this point, the fuel vaporizes and moves down the exhaust to the DPF and cleans it. But, Because biodiesel is denser than conventional diesel fuel (it has a longer hydrocarbon chain) and has a higher distillation temperature and boiling point, it does not vaporize as easily. Some of the fuel ends up adhering to the cylinder wall and runs past the rings, diluting engine oil & eventually causing damage to the internals of the engine.
If you are DPF deleted & the regeneration cycle is programed off then running a higher percentage Bio mix shouldn’t be a problem from that stand point.
However on the 2008 to 2010 6.4 powerstrokes , There was also a new Common rail fuel system with pressures up to +- 25000psi. This particular system used a K17 Siemens VDO (also sold as Continental) high pressure pump that has absolutely no tolerance for dirt or water. If Running higher Bio Diesel fuels, an upgraded fuel filtration system should be considered.

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post #8 of 9 (permalink) Old 12-21-2018, 11:30 AM
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Thanks TD - that was pretty much what I was looking for. Running a dpf deleted and regen deprogrammed truck on B20 (5-20% bio) should be ok, maybe harder on fuel filters (I do them every 15k). I donít run it every tank. Maybe every third tank Iíll end at a place that only offers bio. With that information - Iím not gonna worry about it.

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post #9 of 9 (permalink) Old 12-21-2018, 06:36 PM
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@TD-5,

That was the best explanation I have ever heard on Biofuels in the newer Powerstrokes. I just learned alot.
Thanks


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