Change the spin on filter. If the see thru was that bad then the spin on filter would be worse as its able to stop alot more debris from going through.

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'83 300D 198,000mi Howard
'03 Saturn Vue CVT 75,000mi(wifeys)

D2 3.03
b100 3.58

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

Hi guys,
I have been running b100 for a year now in my '76 300d. About 50,000kms. In the colder winter months, I cut down to b20 or so.
The power is less, but it's so much smoother, smells nice. Running on pork right now.

Your issue with water is typical of some manufacturers. Sounds like the manufacturer is water washing the biodiesel to remove the glycerin. The makers cheaped out on the water separation equipment. If it is true ASTM biodiesel, there will be cleaner, with less water than dino diesel.

I have been working in the biodiesel industry now for almost two years I think. We've recently completed our processor.