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#1
06-05-2006, 10:10 PM
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Soybean oil / rubber
Without any modifications I switched to new soybean oil for fuel (about $2.20 a gallon at Costco). The price attractive yes, but I wanted to do it for pollution reasons (I live just outside a National Park) and to know my driving doesn't contribute to the various situations this country and or some of its businesses gets into because of oil.
I have searched for the answer to my question but was not successful. Does soybean oil cause issues with any of the rubber fuel components (hose, valves, seals)? Thanks Don
__________________
 1980 300TD-T (82 Turbo and Trans) 159,000 Miles "Jackie-O"1983 300SD 272,000 Miles "Aristotle" 1987 Jeep Wagoneer Limited - keeps the MB's off the ice and out of the snow 1994 BMW 530it 
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#2
06-05-2006, 10:14 PM
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no
soybean oil casue no issues with rubber or vitron hoses... none at all...
once it is converted to biodiesel the methonal remaining in the biodiesel after the glycerin is removed... it is that methonal that eats up rubber fittings. So biodiesel will destroy rubber... but since soybean oil has not been processed with methonal it does not eat up rubber fittings... soybean oil and other oils cause coking in the cylinder, rings and injectors... so you must be vigliant with your maintenance....
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#3
06-05-2006, 10:58 PM
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I saw where someone ran soy oil during Katrina because all the gas stations were out and closed down, it was an emergency and worked out to get the driver down the road. I wouldn't run it on a good running engine for long though and certainly not in cold weather. OTOH I know someone using it on an old 220D and it smells real nice (compared to regular diesel fuel!)
__________________
'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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#4
06-05-2006, 11:05 PM
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I've ran it, the engine could care less from what I observed. A tad less power (less energy in the oil than in diesel) and idled waaaay smoother, and was quieter in general...a couple less mpgs, those were the only differences I could tell.
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-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#5
06-05-2006, 11:42 PM
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naysayers
bigred,
there are a number of naysayers, and you will here tons of negative feedback but there are many of us that do this... I run 100% veggie oil 100% of the time....and my oil is all waiste oil... so dont let the naysaysers convince you otherwise. In addition the diesel engine was invented to run off of veg oil... mine runs quiter, and has more power, It no longer smokes and it does not clank and sound like a diesel but more like a fine machine on veggie oil... And people walk around to the back of my car and scoop up hands full of exhaust and breath it in...
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#6
06-06-2006, 01:06 AM
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Blue,
I made the decision to change and won't be swayed to do different until I see our government and business act in a way that makes me feel good. I have had enough and find this one way to DO something about it. It might be a small voice and a tiny act, but like a vote it is mine. It helps make me feel good. I wonder how long it is going to take to outlaw the right to buy veggie oil to dump in your tank? After-all, it is better for the environment, is renewable, can be grown by farmers in this country and no one needs to die to protect it, so they have to outlaw it....don't they? Regards Don
__________________
1980 300TD-T (82 Turbo and Trans) 159,000 Miles "Jackie-O"1983 300SD 272,000 Miles "Aristotle" 1987 Jeep Wagoneer Limited - keeps the MB's off the ice and out of the snow 1994 BMW 530it
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#8
06-06-2006, 01:54 AM
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Methanol is wood alcohol- you are confusing the name with methyl ester aka biodiesel. I don't believe that bio eats rubber hoses. Bio merely exacerbates dry rot in old rubber and hastens its demise. Old rubber lines begin to sweat, and leak at the fittings due to dry rot microcracks. Regular fuel hose works fine if it's new; doesn't have to be Viton.
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'02 BMW 325i '85 300D 450k '93 190E 2.6 170k(killed by tree) '08 Ducati Hypermotard 1100S 6k '06 Ducati S2R800 14k(sold)
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#9
06-06-2006, 01:57 AM
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Quote:
If it does your are ruining your engine running bad biodiesel.
__________________
Current: 05 E320 CDI 07 GL320 CDI 08 Sprinter 05 Dodge Cummins 01 Dodge Cummins Previous 2004 E55 AMG 2002 C32 AMG (#2) 1995 E300 1978 300D 1987 300D 2002 C32 AMG(blown motor :[ 1981 300SD 1983 300SD 1987 300SDL 2002 Jetta TDI 1996 S420 1995 S500 1993 190E 2.6 1992 190E 2.3 1985 190E 2.3 5-Speed
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#10
06-06-2006, 02:01 AM
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Svo/Wvo
Quote:
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Sonny  86 190D N/A 2.5L Auto 265k "Ruby" -Sold-  79 300D 242k "Condi" my first -sold- RIP 2013 chevy sonic hatchback - had to for work 
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#11
06-06-2006, 02:17 AM
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There might be components of pump Diesel that the IP needs to stay healthy. The IP is basically lubricated with engine oil but the innards that contact fuel directly might be lubricated by pump Diesel and insufficiently so with soybean cooking oil.
What concerns me about soybean cooking oil is that the funnel I used to pour soybean cooking oil into the SDL had some sort of formation that was difficult to clean off. I'd be concerned with the same formations if I were running straight soybean cooking oil. It could just be dust settling on residual oil but those were darn nasty clumps. Maybe keeping a mix of pump Diesel isn't a bad idea to keep these potential problems at bay. Sixto
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#12
06-06-2006, 10:04 AM
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In order for Vegetable oil to cause coking on the cylinder walls or piston rings the oil would have to make it into the cylinder and make contact with these parts.
That is almost impossible with our indirect ignition engines. It would be more of a factor with an direct injected engine where you would have to blend to 50-50 or more. Some people run on straight oil. Personally I won't do it. You want to mimic the viscosity of diesel oil as best you can. To do this you blend with RUG or Kerosene. You don't want to blend with diesel because you want something of a lower viscosity to thin out the veg oil. Some people have reported problems blending with Diesel fuel. This happens with the additives in diesel reacting to undesolved fats in the oil. This happens usually with improper filtering or cold weather without a heated tank. And last, take "opinions" with a grain of salt. Do your own research and draw your own conclusions. You will find better information here: http://biodiesel.infopop.cc/groupee Danny
__________________
1984 300SD Turbo Diesel 150,000 miles OBK member #23 (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination
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#13
06-06-2006, 10:13 AM
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Quote:
__________________
1984 300D Turbo Diesel - 211700+ mileage (now sold) http://www.maj.com/gallery/Ned/benz/sig.jpg In any of my posts, it is safe to assume that I'm talking about this car.
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