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Big Orange 
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Joined: 11 Sep 2009
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 Topic: SOYBEAN OIL OR B100 IN DIESEL FUEL
Posted: 10 Jun 2019 at 10:13pm |
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Has anybody had problems with the diesel fuel with soybean oil or B100 in it? In my area MFA sales diesel fuel with 5% to 20% B100 blended in it. My friend is having the injection pump & injectors, on a field sprayer seize up . He drained the fuel tank & replaced fuel filters, reinstalled the new pump & injectors, filled the fuel tank with fuel from a MFA fuel suppler, it ran great for one day. The next day it wouldn't start. The mechanic checked it out & found the pump we not pumping fuel, so he removes the pump & the injectors. My friend takes them to the pump shop, when the pump was dissembled the metering-valve was stuck, as well as the pumping plungers, two of the four injectors were stuck also. He got the pump & injectors back on the engine, drained the fuel tank & installed new fuel filters, putt non MFA fuel in the tank, it has been running great for days.
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wayne IA
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Joined: 22 Sep 2009
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Posted: 11 Jun 2019 at 1:36am |
I run B5 blend in all my equipment (95% crude diesel and 5% bio diesel). The issue with the older rubber seals is that the bio diesel will attack them over time, but generally B10 and lower is safe to use in the older systems. I found one time where they took 15-20 different samples of fuel mixes using anything from 100% crude oil diesel, 2 cycle oil added to diesel, diesel additives (Howes, Power Service, Amsoil, etc.), used motor oil and diesel and a B5 blend of diesel. Some of the mixes were commonly shared "home brews" to increase power (cetane levels), reduce gelling, or increase lubrication. One of the top mixes (if I remember correctly in the top 3, and above straight crude which was somewhere in like the top 5-6) was the B5 diesel blend. In a blind test by an independent laboratory that only had numbers or letters to designate which sample was which, they tested for: the gelling point, lubrication, and cetane (a couple other items too, but don't remember what exactly). The B5 blended diesel had better lubrication, cetane levels, and lower gelling point than 100% crude diesel. Since they have made diesel "cleaner" by removing the sulfur which is what the older systems rely on for lubrication it essentially made diesel "dryer" and would induce more wear on older fuel systems.
Keep in mind though that bio diesel is a little more prone to having black algae grow in it (100% crude is still possible to have the same issue too, just not as easy). If I am going to have fuel sit in a tank more than 6 months, I use a biocide to treat the fuel to prevent the algae growth. The black algae will look like tar and creates water as a by product. Nasty to try and clean out of a tank or fuel system if it is allowed to grow. Each fall when I fill the combine for the last go in the field, I always put biocide in the tank.
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wayne IA
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Posted: 11 Jun 2019 at 1:37am |
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I forgot, bio diesel is also slightly acidic and can knock gunk loose in a fuel system too and cause issues if it is ran in a dirty system.
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wayne IA
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Posted: 11 Jun 2019 at 4:07am |
Went looking for the original test I was talking about, found this one which is just comparing the lubrication value to raw untreated ULSD fuel. http://www.jatonkam35s.com/DeuceTechnicalManuals/Diesel_fuel_additive_test.pdf
Edited by wayne IA - 11 Jun 2019 at 4:08am
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Tbone95
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Joined: 31 Aug 2012
Location: Michigan
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Posted: 11 Jun 2019 at 6:47am |
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Typical when first making the switch for the bio diesel to have a cleaning effect on the fuel system, causing troubles like that, though those sound rather severe comparatively. We went through some fuel filters rather quickly at first, since no troubles. And as wayne said, you don't want it sitting around for a long time.
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Lonn
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Joined: 16 Sep 2009
Location: Назарово,Russia
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Posted: 11 Jun 2019 at 9:08am |
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In my opinion, if you aren't required by law to use it then don't. I don't care if someone else says they had no problems.
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Big Orange
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Posted: 11 Jun 2019 at 10:36am |
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LONN I think you are right about the soyoil or b100, but the low sulfur fuel is one of the problems we are stuck with, what can be done about that, my i ask?
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DougS
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Location: Iowa
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Posted: 11 Jun 2019 at 11:38am |
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My BMW diesel stated *absolutely* no more than 7 percent biodiesel. Warranty void otherwise. I remember stopping at a Kum & Go and finding the diesel pump branded as "between 5 and 20 percent biodiesel." That was it. I drove down the road to the next service station. If they can't tell me exactly what I'm buying, I won't buy it. I've heard of additives for fuels with UL Sulphur, but I have no idea of how effective they are. A lot of additives, especially oil additives, are mere gimmicks.
Edit: I miss the smell of Sulphur in the morning. :)
Edited by DougS - 11 Jun 2019 at 11:40am
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Tbone95
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Location: Michigan
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Posted: 11 Jun 2019 at 12:04pm |
I guess my post is a bit misleading.....We actually haven't been using it for several years. Back then, we used it to save some money, back when off road diesel was pushing $4 per gallon and climbing. Any issues besides the filters, and we would have been money behind anyway. As for the sulfur, they say the additives work!  |
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Big Orange
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Posted: 12 Jun 2019 at 12:49am |
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Well sulfur oil added to the ULS fuel work?
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