Here is an intersting PDF file for those who run on oil like me

Attached Files

polymerization_report.pdf (69.8 KB, 579 views)

Now, just think what the prechambers, injectors and areas arounds the valves look like...Forced Induction has some pictures of valve stems completely coated w/veggie poly.

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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

So mix in some diesel at 10:1 ratio. BFD.

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1984 300TD

I think it'll do the trick
I am already mixing it on 10% here, it's cold in Scotland and a bit of acetone as well for the fat. All good so far. Few bother as I was new and did few booboo but after all, 5000 + miles and going strong

At what point, and in what part of a MB diesel engine,
is the fuel mixture heated to a controlled 250, 275, and 300
degree temp?

It is my understanding that fuel is heated to at
least 160 degrees before going into the cylinder,
at which point it is compressed and reaches a temp.
for in excess of 300 degrees.

What does this have to do with the price of tomatoes
anywhere?

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81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

Is that the same Olivier from Goat??

Unfortunately, You'll not get much support in here for veggy use in an MB (Apart from an enlightened few), as there are a few guys here who promote myths, legends, and rubbish, while never being able to back up their arguments with actual Facts that They Themselves have found/tested/determined The word, 'Sheep' comes to mind, mentioning No names....

(Wonder when Goat will be going again,--Currently Offline...)

HCII

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http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....

Hello Alastair,
Yes, it's me.
You are everywhere
Goat is strong .
I ask Paddy to put the PDF on line as I don't know how.
All the best.
Olivier
Comment ca va?

I use at least 30% diesel in summer.

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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

I just wonder what happens long term in the combustion chamber and the exhaust valve stems, running veg oil. It's actually good info to see and good that someone actually did this, be it uncontrolled, or kitchen controlled.

I'm sure the IP gets quite warm, and based on the steel in them, and the lines, how much poly is forming in them?

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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

The IP is on the side of the engine anyway to get heated for the diesel to flow freely, same with oil, this doesn't change the temperature of the IP.
There are few tale of pump failiure, I am not an expert on this, I just posted this PDF as this is really good info ( for me anyway) and liked other to have it as well. Kitchen style indeed but this is still style
About the chamber and the valves, some have been reported to have 300.000 Kilometer on their mercedes and still going strong on SVO, this when the oil was cheap, about WVO, not sure.
Olivier

interesting, must be something about oil that has been used for cooking... or several cycles of heating and cooling causes the oil to change over it's life span in the deep fryer...or certain foods leave trace elements or interact with the oil in someway...

I notice there is no test with RUG.

I have gotten lots of buildup visible in the fuel filler neck and lots of black specs clogging my inline filters...and I always mix with diesel and RUG but still get what I think is polymerization.

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5

I had those black kind of filament in my pre filter as well, I was told it was because the oil wasn't filtered down to 5 micrond minimum ( I was getting the oil already filtered ), it was true, now I do it my self and down to 1 micron, no more black mesh into the filter.

I'd also like to see that test with WVO/RUG. I run typically 5-10% rug (it took more rug during -5F weather to get the wvo less jelly-like...more like 15%).

I've been running this blend for 37k miles on my 83, and 32k miles on the black 97. I found the 83 is fine with 5 micron filtering, but the 97 needs 1 micron

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Mark in MA
05 MB E320CDI 402k Granite Grey Metallic
05 MB E320CDI 267k Black
05 MB E320CDI 232k White
05 MB E320CDI 209k Tectite Grey
99 Dodge 2500 Cummins 5sp 148k
62 Jeep CJ-6 120k

Greetings,

Great thread.

I read as study done over a 50 yr time span by the petroleum industry on the effects of raw veg oil use in diesel engines.
It was determined that Canola oil was the best for use both short and long term.

Longterm use was defined as >850 hrs of operation and after extensive studies from 1942 to 1982 it was determined that a 30:70 ratio of diesel fuel to canola vegoil had ALL the properties of diesel fuel and could be run long term with NO negative effects on the engine.

For my part I have 2 MB Diesels an '83 300 TD and a '95 300E Diesel. I have run BOTH with WVO from a french fry vendor in town and find FRY oil to be the best if running 100% wvo, but with my 30/70 split I have found the operation to be best even in cold canadian winter.

The '83 has required fuel filter changes, but the 95 has been faultless so far requring nothing.

I have been running them like this since august 08 with no conversions done and LOVE it!

The stuff you're seeing in the filler-neck and tank/lines is the result of the FFA in the veggy oil, (FFA is the 'Free-Fatty-Acid' that veggy breaks down into when exposed to heat, lots of oxygen over time, --As in cooking!)

You Cannot Filter out FFA. Its an oil, just like the WVO its dissolved in. It can however, be neutralised by Caustic washing the oil, But--If you are gonna do that, You might as well make BioDiesel, as you lose around 25% of the oil, and make a 'soap-stock' solution!

The FFA reacts with certain Metal Coatings.....

These metal-coatings are used by M.B. And some fuel-filter makers, namely Mahle and others.....Best use those filters that are Painted rather than bare shiny metal, as these don't seem to have that affected coating

Any Moisture present in the WVO will become acidic, causing rusting and accelerated component wear....VERY important to test Every batch of WVO for moisture/water before allowing it anywhere near a fuel-tank!

The 'waxy deposits' are a result of the FFA reacting with the coatings. It not actually a 'Polymerisation', rather the result of the chemical reaction between the FFA and the coating. It builds up reasonably evenly, effectively sealing off the surface of the coating from the FFA in the oil, and providing you Dont Use BioDiesel (!) will stay put--IF you use BioDiesel, the stuff turns Very dark brown or even black, goes sticky and sheds from the tank/filler surfaces and blocks everything!--Real PITA........

Guess this is why, Elsbett and other reputable vehicle modifiers recommend Only Fresh Unused Oil is used as fuel......

Olivier,--

I have no idea on the PDF, apart from hosting it somewhere etc.....

__________________
http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....