Biodiesel

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rtexpeditions

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Hobart, Tasmania, Australia
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Randall
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The VW has sensors to detect biodiesel and will bring up a fault code so I can't run it but I did commercial-grade biodiesel in a couple of my rigs (Nissan and Mitsubishi) both mechanical injection.

I was always told biodiesel would erode the rubber seals on older rigs because of the lack of sulfur. I don't see that as an issue anymore because most diesel is ULSD now anyway.

Biodiesel does have a higher solidification temperature and I was left stranded in the Nissan in a busy intersection about 100 yds from home on freezing mornings, embarrassingly twice. The Mitsubishi had a fuel tank heater so it never caused problems.

My tip is to run a few tanks through, then change all your fuel filters. Biodiesel will strip the residue left behind by regular mineral diesel that is probably coating the inside of your fuel tank and lines. The residue will clog your filter, which is why some people seem to have problems after using it.
 
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DRAX

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Monticello, IL
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My rig is a 2017 diesel (and my wife's is a 2016 diesel), fooling around with homemade diesel with these seems like it would be an expensive experiment. We do have B5-B20 at the pump here, though, so we do run a bio blend by default.

One thing that is taking off more, but I haven't seen around here (Illinois), is renewable diesel.

But, I guess it would help to provide details about the diesel vehicle itself when talking about running it or not. An older vehicle that doesn't have sensitive emissions equipment is totally different than a modern diesel.