Anyone know where I can definitively get diesel fuel biocide/biostat in the Portland, Oregon metro area?

Places that DON'T have it (or don't know that they do):
GI Joe's
Baxter Auto Parts
Ag West
BrettHauer Oil
Hillsboro Diesel

I'd rather not order it online if I can get it locally. Anyone from the area know where I can get some? I'm going to start trying tractor and farm supply stores next.

West side or close-in SE or NE would be preferable, but anywhere would do.

Thanks!

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Aaron
'84 300D 267,000 - Running WVO - Rice Bran Oil - Mmmmmm, fishy...
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