Vegetable oil in diesel engines - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 09-15-2005, 10:21 AM
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Vegetable oil in diesel engines

used: Could anybody tell me if there is any problems related to running a 525 TD on vegetable oil and if so what they are?
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#2 (permalink) Old 09-15-2005, 12:35 PM
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I have no idea, my jury is out on veggie oil but this site may help <_<




http://www.dieselveg.com/Vehicle%20List.htm

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#3 (permalink) Old 09-15-2005, 02:00 PM
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I think you would need to pass the veggie oil through some sort of process to turn it into biodiesel. I know I did it in college, and am pretty certain it would run on it, but I cannot remember exactly. It would very likely not burn as clean, and it would lack the additives that are added to comercial diesel fuel from which the engine benefits.

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#4 (permalink) Old 09-15-2005, 08:50 PM
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Check out www.greasecar.com they have a kit that can be put in any diesel car that will allow it to run on veg oil. Even if you don't want to buy the kit the message board there is great and will answer all of your questions.

From what I have read veggie oil is cleaner burning than diesel because it contains no sulfur. It also provides the same power and mpg and costs a lot less. (Free ) Because of the lack of sulfur the emissions are quite good as well. Your diesel should have no problems running it, I'm sure there are quite a few people over at greasecar who can show evidence of this.
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#5 (permalink) Old 09-16-2005, 11:41 AM
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Cheers guys .i will give grease car a looking over and see if the info is on there
regards
degs
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#6 (permalink) Old 09-18-2005, 12:59 PM
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The cost of properly produced commercially available propriatory fuel even at present prices is "nothing" compared to the real costs of running the car-----properly. Let the "experts" try out cheaper fuels & save your own car for yourself. I'd run mine on water or even sewage if it were properly proven to not destruct my engine. Meanwhile I'll pay the regular pump price.
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#7 (permalink) Old 09-26-2005, 04:35 PM
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I'm pretty sure biodeisel is perfectly safe to put in your car. However, I don't own one and have never tried it, so don't take my word for it. Everything I have read on it, though, had good things to say. And I did do quite a bit of research when I was bimmer shopping, as I was considering a diesel.

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#8 (permalink) Old 09-27-2005, 10:34 PM
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Quote:
Originally Posted by davidvh2
The cost of properly produced commercially available propriatory fuel even at present prices is "nothing" compared to the real costs of running the car-----properly. Let the "experts" try out cheaper fuels & save your own car for yourself. I'd run mine on water or even sewage if it were properly proven to not destruct my engine. Meanwhile I'll pay the regular pump price.
I love people like you. You're the reason car dealerships are able to charge 200-1000% markup on most items. You'll pay whatever we ask because you haven't done the homework yourself on how things work/how much they cost.


You can run pure veggie oil as long as you run an inline filter and the oil is heated to around 170+ degrees F (otherwise the viscosity is the main reason it wont work) There are additives out on the market which lower the pour point of oils to make them not need to be heated but they are mostly alcohol based to my knowledge.

Vegetable oils have about 6% less BTU's per gallon then diesel (136,567 Btu/gal vs 128,372 Btu/gal), so you can roughly expect a similar MPG as diesel.

Interestingly, the cetane #'s for vegetable oil vs diesel is also favorable in the the avg cetane # for veggie oil is ~35-45 vs ~60 for diesel.

Old seals on vehicles made prior to the introduction of viton seals (around 1993) can have seal failures though, as a side note.

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