You can never offend me Nick. I realise you are smarter than me too

I see you have taken my post the wrong way though.

I was supportive of making biodiesel for common rail fuel system.

But here is my question ... Would you modify your common rail vehicle to two tanks system to run it on biodiesel? So diesel is a start up fuel and biodiesel takes the place of wvo. Would you do that?

Cheers buddy

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Fitian
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A simple test - Take a container that measures one litre graded in milli litres. Add to it exactly 1 litre of water and weigh it accurately. It should weigh exactly one kilogram. That means that it has a SG (a specific gravity) of 1.

Take exactly 1 litre (1000 milli litres) of fossil diesel and weigh it. It should weigh about 820 grams - SG of .82. Take exactly 1000 milli litres of your biodiesel and weigh it. hopefully, it should weigh around 840 - 850 grams.

That means that it is only slightly thicker than fossil and should be OK in common rail fuel managed systems.
As I said before my Disco has done 90,000 kms on biodiesel (total 115,000 kms), is easy to start hot or cold and runs really smooth.

My friend who is a diesel fuel system/injector maintainer says that those who do not refine their biodiesel properly and run it in common rail engines "can" have trouble down the track.

Hello Silverfox

Is sg and viscosity related?
Doesn't water have a higher sg and a lower viscosity than axle oil?

HHhhhhmmmm an interesting thought.

And I do believe he is correct.

I ran my common rail pug on B100 for four years until materials (pump seals, fuel filter, lines) gave way. Its timing was not brilliant as its was tuned for mineral but it went fine. Back on B20 and its running better than ever.

Matt

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Biodiesel Bandit

Landcruiser 98 B100
Peugeot 306 stdt B100
Peugeot 2004 2L 307 HDI Does not like B100

I would not do a two tank system no. Bio Blends will be the goods IMO.

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Cheers
Nick.

Roidio 2001 Holden Rodeo 4x4 2.8L TD. 2.5" Straight through exhaust sytem, heat exchanger shower system. 2" Body Lift,
And lots of fruit, B100 for 25,000 no problems.

Elsa 1983 Mercedes-Benz W123 300D. The Fastest Merc in Oz, Loving B100 Burgers

However, I believe that 2 tank systems may in time become the norm for vehicles with them particle dust busting thingamagings.

They need to have dino to allow them to reach higher temps so that the soot burns off. Running a 2 tank system will take care of this issue nicely as well as ensuring you do not have any issues with the common rail set up.

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Slippery
Small steps taken one at a time.

I've been running a brand new BMW 120d on B100 for the past year (15,000km and counting) and so far, so good.

It has a common rail injector system (piezo injector pressures are 1800bar) and it also has an active DPF.

The only issue I've noticed is that my oil level had gone up a little (now changed) and this may be due to the post injection of fuel for the DPF to work. Not a major problem. It just means that I'll change the oil more frequently than the recommended 35,000km.... That's right, they say 35,000km!!

As for any seals breaking down... only time will tell, but I'm doing some tests of my own. See my site for details. I try and post the same info here to in the thread that I started.

Regards,

Paul

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Two BMW 120d (April 2007 & June 2008)
Both running B100 (from WVO) since new
20,000km & 10,000km @ 5/10/08 and going strong!
http://web.mac.com/nitramluap/Biodiesel/

sorry for asking but whats SG?

Sorry I Know Now