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#990910 - 09/17/07 11:28 AM UOA with biodiesel runned engines
Cutehumor Offline


Registered: 12/10/02
Posts: 8957
Loc: USA
anyone done any?
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#990911 - 09/17/07 04:16 PM Re: UOA with biodiesel runned engines [Re: Cutehumor]
firemediceric Offline


Registered: 04/18/07
Posts: 66
Loc: Vero Beach, FL
I have a UOA out of my 1999 F-350 7.3 that I run on a WVO blend, not BD. Everything looked great after 5K. I'm looking to extend the OCI this time.

My results are posted at info-pop on the Solvent Blending sub-forum and on The Diesel Site in the Alt. Fuels section. You can search my screen name at either of those sites or I can work on posting the results here if you don't find the report at the other places.

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#3308934 - 03/12/14 12:15 AM Re: UOA with biodiesel runned engines [Re: Cutehumor]
WoofWagon Offline


Registered: 06/12/12
Posts: 8
Loc: Washington State
I have had no issues on my UOA with running biodiesel. I did have some high potassium when I first started using UOA, but that may have been due to the potassium hydroxide used for making the biodiesel.

After about 2 oil changes the potassium levels dropped.

My Powerstroke loves running biodiesel, it smooths right out and EGTs drop about 100F when under load.
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2001 F250 Powerstroke, B100 biodiesel. NTZ oil bypass
2004 Ford CVPI, 146K miles. Mobil 1 with Motorcraft filter.

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#3376854 - 05/20/14 08:25 PM Re: UOA with biodiesel runned engines [Re: WoofWagon]
yvon_la Offline


Registered: 05/20/14
Posts: 740
Loc: quebec canada
You probably dont want to know(by my experience)if i had to venture a guess ? Group 5 oil and biodiesel (20%) are probably twins.ya very harsh .same problem with ethanol gas.and you know the joke about this?you cant run without biodiesel either!why?because of the ultra low sulfer part!best bet ?1% is the sweat spot.so the voa etc might not be exact since biodiesel (or its ethanol gas variant have a huge say .check what ethanol is compatible with do the same for bio .that list is insanelly short.in my car manual it say gas 91 .NO OXYGENATED GAS (nigrogen v power is probably oxygenated lol)so in the end this means my car isnt warrantied since i cant find ethanol or oxygen free gas (normal old school unleaded gas)
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#3415673 - 07/05/14 09:33 PM Re: UOA with biodiesel runned engines [Re: Cutehumor]
TiredTrucker Offline


Registered: 01/04/08
Posts: 1006
Loc: Kellogg, IA
i regularly run bio blends between 5% and 15% in my Detroit Series 60 12.7L engine. I run the oil changes to 50% over the OEM recommended drain and things look fine Currently on 22,500 mile OCI's. Oil still good, but I am not looking to set some sort of extended drain record, so running 50% more than the OEM recommended level fits well in my comfort zone.
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Hey there, VA, what do ya say? How many vets did you kill today?

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#3517243 - Today at 07:16 PM Re: UOA with biodiesel runned engines [Re: TiredTrucker]
Artem Offline


Registered: 10/30/10
Posts: 4372
Loc: Florida
Originally Posted By: TiredTrucker
i regularly run bio blends between 5% and 15% in my Detroit Series 60 12.7L engine. I run the oil changes to 50% over the OEM recommended drain and things look fine Currently on 22,500 mile OCI's. Oil still good, but I am not looking to set some sort of extended drain record, so running 50% more than the OEM recommended level fits well in my comfort zone.


Strange, my 2014 Ram 3500 with the 6.7L Cummins engines says that if biodiesel higher then 5% is used, the oil changes must be shortened from 15k miles to 12.5k. Why would they recommend that if diodiesel is not harmful? Can anyone explain this to me?
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2011 Toyota Avalon Limited 3.5L V6 - 52k - 5w30 Mobil 1

2014 RAM 3500HD work truck

2014 Mazda 3 hatch i Touring 2.0L & 6spd - Mobil 1 0w30

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