Biodiesel start up tons of smoke

[TijuanaTom]

When I run biodiesel and I start my truck I get a tons of whitish smoke..  B20 is what they sell here.

When I don't run biodiesel I hardly get any smoke at all..

Why so much smoke with the biodiesel?  I think my engine sounds healthy with the bio.. or maybe that's in my head

Thanks for the insight!

[maxfax]

That does sound a bit odd..   Typically bio burns fairly clean..  Have your tried it from only one source, or do you have any others you could try?  Maybe the fuel just isn;t top notch...