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Tractor Talk Discussion Forum

low-sulfur diesel fuel

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plowboy 1

11-20-2007 18:35:46




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I have read that the new formula fuels can damage the old injectors and pumps ( no sulfur for lubrication). I was using 2% biofuel but am afraid it will gel under 40", straight biofuel looks like lard at that temp. What would you guys suggest as an additive? Will 2% biofuel stay in suspension or clog filters just like wax? Thanks.




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High Octane

11-21-2007 14:42:28




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 Re: low-sulfur diesel fuel in reply to plowboy 1, 11-20-2007 18:35:46  
Is the new bio diesil made mostly of Methanol? Dos it ever separate?



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djm75

11-22-2007 04:58:55




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 Re: low-sulfur diesel fuel in reply to High Octane, 11-21-2007 14:42:28  
methanol is part of the process but not needed to make bio diesel and it is stripped out when made. we use a recovery process so no need to worry about methanol.
Don



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jdemaris

11-21-2007 08:18:05




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 Re: low-sulfur diesel fuel in reply to plowboy 1, 11-20-2007 18:35:46  
There's been a lot of testing done in regard to pump wear, and fuel additives to bring up fuel lubricostity. Results are kind of surprising since the Stanadyne fuel additive did not do too well. The overall "best bang for the buck" was using a 1 to 200 ratio mix of two-stroke-oil added to the diesel. If you want, I can send you - or post - the test data. In regard to gelling - I've been using Power Service (white bottle) for years I've driven quite a bit a temps down to 15 below - with no problems.

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jokers

11-21-2007 09:20:36




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 Re: low-sulfur diesel fuel in reply to jdemaris, 11-21-2007 08:18:05  
I`d like to see that data, can you post it or a link to it? I wonder if 2 cycle oil is good would synthetic 2 cycle oil be better?

I also use Power Service in the white bottle and have had no gelling of fuel as long as I use it regularly. We get a week or two every year where the temps get down to -20 - -30.



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jdemaris

11-21-2007 14:55:43




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 Re: low-sulfur diesel fuel in reply to jokers, 11-21-2007 09:20:36  
I'm testing the forum, since it hasn't been letting me post the data. If this message goes through - then I assume I cannot post it here - it's being stopped for some reason.



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jdemaris

11-21-2007 15:04:09




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 Re: low-sulfur diesel fuel in reply to jdemaris, 11-21-2007 14:55:43  
Here is #1 through #6 - with #1 giving the best protection - but not necessarily the cheapest. Sorry - I posted out of sequence.

These results are listed in the order of performance in the HFRR test. The baseline fuel used in
every test started at an HFRR score of 636. The score shown is the tested HFRR score of the
baseline fuel/additive blend.
Also included is the wear scar improvement provided by the additive as well as other claimed
benefits of the additive. Each additive is also categorized as a Multi-purpose additive,
Multi-purpose + anti-gel, Lubricity only, non-conventional, or as an additive capable of treating
both gasoline and diesel fuel. As a convenience to the reader there is also information on price per treated tank of diesel fuel
(using a 26 gallon tank), and dosage per 26 gallon tank provided as “ounces of additive per 26
gallon tank”. In Order Of Performance: 1) 2% REG SoyPower biodiesel
HFRR 221, 415 micron improvement.
50:1 ratio of baseline fuel to 100% biodiesel
66.56 oz. of 100% biodiesel per 26 gallons of diesel fuel
Price: market value 2)Opti-Lube XPD
Multi-purpose + anti-gel
cetane improver, demulsifier
HFRR 317, 319 micron improvement.
256:1 ratio
13 oz/tank
$4.35/tank 3)FPPF RV, Bus, SUV Diesel/Gas fuel treatment
Gas and Diesel
cetane improver, emulsifier
HFRR 439, 197 micron improvement
640:1 ratio
5.2 oz/tank
$2.60/tank

4)Opti-Lube Summer Blend
Multi-purpose
demulsifier
HFRR 447, 189 micron improvement
3000:1 ratio
1.11 oz/tank
$0.68/tank

5)Opti-Lube Winter Blend
Muti-purpose + anti-gel
cetane improver
HFRR 461, 175 micron improvement
512:1 ratio
6.5 oz/tank
$3.65/tank 6)Schaeffer Diesel Treat 2000
Multi-purpose + anti-gel
cetane improver, emulsifier, bio-diesel compatible
HFRR 470, 166 micron improvement
1000:1 ratio
3.32 oz/tank
$1.87/tank

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jdemaris

11-21-2007 15:01:29




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 Re: low-sulfur diesel fuel in reply to jdemaris, 11-21-2007 14:55:43  
OK, now it's working - so obviously the forum will not allow the complete post. So, here's a few pieces. The higher the micron number posted, the better wear protection. It shows that adding used motor oil gives no extra protection which kind of surprises me.


7)Super Tech Outboard 2-cycle TC-W3 engine oil
Unconventional (Not ULSD compliant, may damage 2007 or newer systems)
HFRR 474, 162 micron improvement
200:1 ratio
16.64 oz/tank
$1.09/tank 8)Stanadyne Lubricity Formula
Lubricity Only
demulsifier, 5% bio-diesel compatible, alcohol free
HFRR 479, 157 micron improvement
1000:1 ratio
3.32 oz/tank
$1.00/tank 9)Amsoil Diesel Concentrate
Multi-purpose
demulsifier, bio-diesel compatible, alcohol free
HFRR 488, 148 micron improvement
640:1 ratio
5.2 oz/tank
$2.16/tank

10)Power Service Diesel Kleen + Cetane Boost
Multi-purpose
Cetane improver, bio-diesel compatible, alcohol free
HFRR 575, 61 micron improvement
400:1 ratio
8.32 oz/tank
$1.58/tank 11)Howe’s Meaner Power Kleaner
Multi-purpose
Alcohol free
HFRR 586, 50 micron improvement
1000:1 ratio
3.32 oz/tank
$1.36/tank

12)Stanadyne Performance Formula
Multi-purpose + anti-gel
cetane improver, demulsifier, 5% bio-diesel compatible, alcohol free
HFRR 603, 33 micron improvement
480:1 ratio
6.9 oz/tank
$4.35/tank 13)Used Motor Oil, Shell Rotella T 15w40, 5,000 miles used.
Unconventional (Not ULSD compliant, may damage systems)
HFRR 634, 2 micron improvement
200:1 ratio
16.64 oz/tank
price: market value

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budn

11-21-2007 07:53:05




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 Re: low-sulfur diesel fuel in reply to plowboy 1, 11-20-2007 18:35:46  
I'm running 20% at 20 degrees without trouble. But with temps headed to single didgets this week I will be switching to a blend. In Minnesota we are mandated to use 2% all the time.



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djm75

11-21-2007 03:32:33




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 Re: low-sulfur diesel fuel in reply to plowboy 1, 11-20-2007 18:35:46  
That is normal with the plugging at first bio diesel will clean anything. The first thing they marketed it for was paint and decal remover yes it will strip paint. It won"t gel when mixed in a 20% or less with petro diesel until the actual petro diesel gels. Also 2% bio has more lubricity than the old sulfur packed petro diesel.



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markct

11-21-2007 13:53:22




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 Re: low-sulfur diesel fuel in reply to djm75, 11-21-2007 03:32:33  
i am well aware of the cleaning caracteristics causing filter plugging in the beggining, but after a bit things were fine then every now and then a bad load of fuel would start plugging filters again. we use about a tractor trailer load of fuel every 15 days



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markct

11-20-2007 18:59:13




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 Re: low-sulfur diesel fuel in reply to plowboy 1, 11-20-2007 18:35:46  
i am a mechanic for a medium sized fleet of garbage trucks and tractor trailers, the change to ultra low sulfer diesel a year or so ago did take alot of the lubricity outa the fuel, but the other problem is that it made it alot more prone to gelling, ya almost have to use an anti gel product now whereas before some people snuck by without, we use fppf brand but most any will work, the new fuel doesnt react as well to kerosene cutting as the old stuff did, it used to be that with say 10 percent kero the plug point lowered say 5 degrees just for the sake of talking, then 20 percent would lower it 10, and so on, well the new fuel ya get very little effect beyond 10 percent tests have shown. so additives are the way to go, and most also add lubricity back into the fuel also, and contain a water dispersant, this is especialy important with mixes containing biodiesel, since they say the esthers in bio have a tendancy to attract moisture, which i would have to agree with since before we started running 20 percent bio our fuel tank was shiny like new steel inside, now a look in thru the manhole shows a good bit of surface rust all over the inside, its a 10,000 gallon tank. we had filter plugging problems with bio, but not temperature related as much as quality of bio related, we had filters plugging with a load of fuel, then next few loads were fine, then another series of filter plugging with stuff that looked like vaseline, glycerine and other compounds they said. no amount of treatment would cure it, and it wasnt even cold, maybe mid 40s at coldest. so bio is still kinda a luck game atleast around here. but realy we saw very few problems with the bio except for a few bad loads we got

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Mike in AR

11-20-2007 18:49:33




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 Re: low-sulfur diesel fuel in reply to plowboy 1, 11-20-2007 18:35:46  
Try this link:

http://dieselplace.com/forum/showthread.php?t=177728



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