I found this company online, they specialize in cold flow additives for oil and hydraulic fluid but found that the chemistry is applicable to biodiesel as well.

http://www.rohmax.com/rohmax/e...proversforbiodiesel/

Their US branch is close to me and they sent me samples of 3 products and I blended up some samples and dropped them off today along with some neat B100 for them to test cloud point, pour point, and cold filter plugging point.

I will advise the results. From price indication it would seem to add $.0125 per gallon.

I have the results but need to figure out how to attach an excel spreadsheet or pdf file.

Our untreated B100 has a CFPP of -3F or 26.6F

Study shows no improvement on CFPP but improvement in cloud point, pour point, and storage at cold temps.

Temps are celsius. 2C improvement in CFPP with Viscoplex 10-330

Sample Waste Vegetable Oil / Used Cooking Oil B100, PL-39933
Viscoplex CFI untreated 10-330 10-330 10-330
treat rate, % - 0.25 0.5 1.0
ASTM D6749 Pour Point, C -3 -6 -6 -12
ASTM D2500 Cloud Point,C 1 -1 -2 -2

CFPP (oC) -3 -2 -3 -5


Sample Waste Vegetable Oil / Used Cooking Oil B100, PL-39933
Viscoplex CFI untreated 10-305 10-305 10-305 10-305
treat rate, % - 0.1 0.25 0.5 1.0
ASTM D6749 Pour Point, C -3 -9 -15 -27 -27
ASTM D2500 Cloud Point, C 1 0 -1 -1 -1

CFPP (oC) -3 -3 -3 -3 -3

Photos and data from storage test

http://biodieselpictures.com/v...opic.php?p=1509#1509

Here's the data...