Thanks for the research.
I read it but did not see anything concerning lubrication or what happens with long term use to O-rings or the IP shaft seals that are on vehicles like my Volvo.

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84 300D, 82 Volvo 244Gl Diesel

There is some indication that some compounds like turpentine, naptha and mineral spirits raise the effective cetane of diesel when used in small amounts but lower it in large amounts.

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Ron Schroeder
'85 300 Turbo Diesel 2 tank WVO
'83 300 Turbo Diesel 2 tank WVO
Some former WVO vehicles since ~1980:
'83 Mercedes 240D
'80 Audi 4000D
'83 ISUZU Pup
'70 SAAB 99 with Kubota diesel
'76 Honda Civic with Kubota diesel
'86 Golf
Several diesel generators
All with 2 tank WVO conversion
LI NY

"Pure gum turpentine has a Cetane value of about 120-130" is posted by: crossbones in post 8 down from the top at this biodiesel forum.
http://biodiesel.infopop.cc/eve/forums/a/tpc/f/9751014871/m/7861049642

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84 300D, 82 Volvo 244Gl Diesel

A couple things to clear up:

1.) Biodiesel does not equal dimethyl ether. Biodiesel is comprised of mono-alkyl esters of long chain fatty acids. These fatty acids are from vegetable and animal fats. In the US, almost all commercial bio is soy-derived. In europe, canola oil (rapeseed) is often used.

2.) "Biodiesel has very good cetane, but a potential problem with mixing it in your tank is water dropping out of the mix because of biodiesel's higher water solubility and the washing process in the production of biodiesel that saturates it with water."

Almost all commercial biodiesel producers that i know of do not use water-washing techniques to make fuel anymore. Even homebrewers like myself often do not use water for the process (I don't). Commercial operations use beds of resin beads to remove residual 'soap' and traces of glycerol that is produced. Even so, water cannot stay in biodiesel for long, it will drop out in storage, just like water in regular D2.

In the ASTM spec, you will notice there is no spec for water content. There is, however, a spec for methanol (methyl alcohol). Water is attracted to methanol, and the only way to suspend water (and other impurities) in biodiesel is to have high out of spec methanol content. Otherwise, its like oil and water - they wont mix. So, just like regular D2, or any fuel for that matter, no drawing off the bottom of the storage tank :-)

for further reading:

Amberlite resin beads used to purify biodiesel after reaction:
http://www.utahbiodieselsupply.com/images/amberlite/amberlite.pdf

ASTM spec for b100: http://www.biodiesel.org/pdf_files/fuelfactsheets/BDSpec.pdf

I do not in any way pretend to be a biodiesel expert or professional, I am but a homebrewer, but I do strive to make fuel that conforms to the ASTM spec.
dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car

About the water separation from biodiesel, I got that info from a local commercial biodiesel producer. This was about 2 years ago and the manager told me they were looking at ways to improve the process so that water doesn't drop out when mixed with petroleum diesel. Maybe they have figured it out by now but I don't know as I'm no longer a customer there. Biodiesel supposedly can dissolve a limited amount of water and there indeed is an ASTM spec for it, at least there was last time I saw the ASTM test sheet that they showed me. Maybe it applied only to blends and not B100. Anyway thanks for the info. I'm glad to hear this should no longer be a problem.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

Is there an additive for diesel, like for gas, that you can dump in the tank to
help get rid of the water?
I don't know what the additive does for gasoline but if you add the stuff to your
gas tank it will either mix with the water so it is combustible or who know what the heck it does! LOL!
But is there the same thing for diesel?

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Ginny in Denver-ish
78 300SD, 265K (mine)

This is supposed to take care of water in the fuel system, however, I haven't ever used it personally...

http://www.powerservice.com/d911/

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2015 E250 Bluetec Black/designo Sand
2014 GLK250 Bluetec Iridium Silver/Almond
1999 E320 Sedan Bordeaux Red/ Parchment
1999 E270CDI Estate Black Opal/Black
1983 300SD Champagne/Palomino Leather
1982 300SD Silver Blue/ Pacific Blue Leather

Methane liquefies at over 1000 psi...I doubt highly that one would be getting liquid methane from a fuel pump. Methane is natural gas...and the main component in NG that is delivered to homes...approx 85% methane that is and other elements to make the full 100%.

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'95 E300D 313k miles
http://www.ourfullhouse.com

A lot of the standard diesel additives disperse water. PowerService (the white bottle) and Redline 85+ are some of them.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

ADR - yep, methane is natural gas and it comes from the ground. So the early poster must not have been talking about adding an ounce of methane to the fuel - was he talking methanol?

You certainly don't want methanol in your diesel. Otherwise why do biodiesel producers try to remove it before selling their product?

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

He was talking about nitromethane, the fuel used by the top fuel 1/4 milers...dragsters and funny cars.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D

Methanol is an ingedient of biodiesel.

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'83 300D 198,000mi Howard
'03 Saturn Vue CVT 75,000mi(wifeys)

I wonder that too.Yellow Heet for cars is methonal,the Red heet for diesels is rubbing alcohol.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

A little bit of Methanol is needed in biodiesel.

What they try to remove/recover is excess Methanol.