07 Duramax: Biodiesel - Chevy and GMC Duramax Diesel Forum
Alternative Fuels - Diesel - Additives - Lubricants Discussion of diesel, its various additives, oils, lubricants and alternative fuels IE: Bio-Diesel ect...

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post #1 of 53 (permalink) Old 04-02-2007, 10:53 AM Thread Starter
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07 Duramax: Biodiesel

I'm a bit confused. Someone on this forum claimed that the new 07 Duramax's are not compatible with biodiesel.....but on the Chevy website they describe they new 07 Duramax as being biodiesel compatible. What's the real story?

Secondly, how does biodiesel compare to ULSD in terms of particulates and overall environmental impact?
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post #2 of 53 (permalink) Old 04-02-2007, 01:26 PM
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I was just about to post the same type of thing. Does anyone know what % of Bio you can run in the LBZ, if any?

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post #3 of 53 (permalink) Old 04-03-2007, 06:20 AM
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I have heard you can use 5% bio and 95% diesel at the moment with no warranty issues or any known problems. It all depends on where you live, but if you live in colder climates they don't recommend anything higher because the biodiesel will gel up and cause alot of problems. If it is a higher percentage you will have a lot of maintenance issues as well because the biodiesel actually breaks down the deposits that were left from the regular diesel...
Only what I have heard... Don't shoot the messenger!
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post #4 of 53 (permalink) Old 04-07-2007, 08:27 AM
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GM says no more than 5% bio beginning 2004. The new S15 (ULSD) uses bio for an additive to replace the natural lubricants lost in the refining process. The new Duramax engine is built with viton seals that withstand bio. My 2002 was not, the left bank fuel rail has already required rebuilding to replace the copper seals which began leaking fuel into the crankcase. Cost-$760, now I'm waiting on the right bank to begin leaking. My source is:http://http://www.biodieselnow.com/b...l/default.aspx

Last edited by Ray,IN; 04-07-2007 at 09:05 AM.
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post #5 of 53 (permalink) Old 04-22-2007, 06:48 AM
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I run Bio in my 2006 all the time. I personally haven't gone higher than B50, but work with a guy to runs B99 almost exclusively. According to the BioDiesel web stuff there is no problem. I have not heard of any issues running Bio. Matter of fact, with the low sulfer diesel struggling to keep lubricity in the fuel, the bio does not have that problem. http://www.biodiesel.org/news/bulletin/


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post #6 of 53 (permalink) Old 04-23-2007, 05:16 PM
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wheat, does the biodiesel website offer to assume your GM warranty too? How do they know GM is wrong when they limit the bio-diesel 5%? If the bio-diesel organization can prove GM wrong, or assume their Duramax warranty, I'd like to use the stuff.

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post #7 of 53 (permalink) Old 04-23-2007, 08:37 PM
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Interesting topic. Don't know whos right. I know the performance guys run bio for added lubrication. I know guys that run additives that range from high end stuff like ames oil prodcuts to marvel mystery oil, I know one guy who puts a few ounces of 2 cycle oil in every tank for lubrication actualy that kind of makes sense to me. The injector pump went out on my john deere. The guy at the shop ask me if I run bio diesel in it, which I currently do not. He indicated that they are seeing a higher number in injector pump failures with biodiesel do to less lubrication. He seems to thnk it is because of water in the fuel or gelling of the fuel reduces the lubrication properties of the fuel. Don't know which way to go on the bio stuff?
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post #8 of 53 (permalink) Old 10-19-2007, 05:55 PM
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By 2012 all diesel in the US and Canada will be B5.
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post #9 of 53 (permalink) Old 12-25-2007, 07:19 PM
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so, I am am confused! Is my LLY biodiesel compatable or not?

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post #10 of 53 (permalink) Old 12-25-2007, 07:20 PM
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Also, Should I be using additives in my regular fuel?

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