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  #1  
Old 03-02-2005, 03:47 PM
'81 300TD
 
Join Date: Aug 2004
Location: Oregon
Posts: 38
'81 300TD switch to Biodiesel

I'd like to switch to a Bio blend in my '81 300TD. Other than fuel line replacement, filter changes, and tank cleaning, are there any other components that need to be replaced (i.e. internal injector pump seals, etc.)?

Gary
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  #2  
Old 03-02-2005, 04:23 PM
phidauex's Avatar
BioDiesel Hopeful
 
Join Date: Oct 2004
Location: St. Louis, MO
Posts: 806
All you need to do to switch is to just start pouring biodiesel in the tank.

If you are using B20 or less, then don't do anything else. Just pour it in and enjoy.

If you are using higher blends, up to and including B100, then do the following:

Get a spare set of fuel filters, and keep them and the tools to change them in the car with you. (I actually recommend this for anyone, bio or not).

Over the next 6 months, keep an eye on your injector return lines (the ones in between the injectors), and the rubbery hose going to the fuel filter. If they start to weep or get sticky, its time to replace them. If they've been replaced in the last few years, they are probably the newer hose which shouldn't have a problem with the biodiesel.

Thats it.

There really isn't any preparatory work involved, and the only thing you need to be aware of is that you may clog your filters early on from the 'gunk' being cleaned out of the engine, and if you've already got a fungal infection, biodiesel could make it worse. Stock fuel lines may get soft and degrade over time with higher blends of biodiesel (though if they are still stock, they are probably beginning to degrade all on their own by now), but it isn't catastrophic, just check it every few weeks and replace if they start to weep.

I've gone over 6000 miles on biodiesel, and haven't had to change a filter or hose, and a friend of mine has driven her two VWs over 100,000 miles on biodiesel, and only changed the hoses in one of them.

peace,
sam
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  #3  
Old 03-02-2005, 04:25 PM
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Ditto what phidauex said.
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1984 300D Turbo - 4-speed manual conversion, mid-level resto

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  #4  
Old 03-02-2005, 05:19 PM
lietuviai's Avatar
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Join Date: Mar 2003
Location: SW WA
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What about with WVO?
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84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
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  #5  
Old 03-02-2005, 05:22 PM
djugurba's Avatar
say: Jook-Ur-Pah
 
Join Date: Jun 2003
Location: Lake Boon, MA
Posts: 987
For best results with WVO, you ought to install a dual tank system. This also preserves the stock set up such that if you have a veggie issue, you can still run on petro or biodiesel.
www.greasel.com
www.greasecar.com
www.vegenergy.com (with new tanks for wagons!)

cheers,
k
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  #6  
Old 03-02-2005, 06:35 PM
Biodiesel Enthusiast
 
Join Date: Feb 2005
Location: Central Coast, California
Posts: 11
Filters and Hoses have been it for me for about 40k running B100 in my three vehicles. You can expect to change your filters twice with the high level blends. Good Luck.
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  #7  
Old 03-02-2005, 06:55 PM
'81 300TD
 
Join Date: Aug 2004
Location: Oregon
Posts: 38
Thanks for the replys.

Quote:
Originally Posted by BioLuke
Filters and Hoses have been it for me for about 40k running B100 in my three vehicles. You can expect to change your filters twice with the high level blends. Good Luck.
Bio Luke, I sent you a PM.
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  #8  
Old 03-02-2005, 09:25 PM
lietuviai's Avatar
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Join Date: Mar 2003
Location: SW WA
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Quote:
Originally Posted by djugurba
For best results with WVO, you ought to install a dual tank system. This also preserves the stock set up such that if you have a veggie issue, you can still run on petro or biodiesel.
www.greasel.com
www.greasecar.com
www.vegenergy.com (with new tanks for wagons!)

cheers,
k
Thanks for the links Jook-ur-pah (I wondered how you pronounced that)
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84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
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