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Old 04-13-2005, 12:42 AM
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Join Date: Mar 2005
Posts: 34
Can I use biodiesel in my 1985 300DT?

I know...simple question...and I did do a search <g>...but couldn't find a direct answer:

Can I run B100 (or less of course) in my 1985 300DT? Will the rubber components be OK, etc?

I plan on installing a two-tank Veg system (like I have on my '97 Passat TDI), but I also want to run biodiesel.

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Old 04-13-2005, 01:35 AM
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Join Date: Jan 2005
Location: Ladeluftkühlerstadt
Posts: 1,429
Simply purchase several spare primary and secondary fuel filters to catch all the accumulated crap washed out by the solvent properties inherent in Biodiesel, and you'll be just fine. Your MBs inline pump is lubricated by engine oil, not the fuel itself, so you shouldn't experience any direct adverse effects due to the bio. On the contrary, you'll find the engine should idle much smoother, and the prechambers will be less prone to coking--good stuff, and MBs luv it.

You should definitely replace any worn fuel return hoses or a leaking primer pump prior to switchover, but otherwise, it should virtually be "plug and play".
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Old 04-13-2005, 01:36 AM
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Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,276
use search tool (above)
see: biodiesel
and take this discussion over here:
'00 E320 (wifes car), '95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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