The fuel filter on the car is a standard item, guess a 10uM....

I filter all the fuel prior to the car using 'Aqua' 10" filters, first 20, 10, 1 and then 1uM Absolute...(These are allegedly according to the makers, the sort of filter that are capable of removing 'cryptosperydium' bacteria etc from water)

As has been said, WVO contains all sorts of crud. During the making of BioDiesel, Most but Not All comes out anyway. Whats left apart from the usual soaps that have to be dealt with, who knows, But best filter properly. There's never been a case of 'Too Good' a filtered fuel causing a problem that I know of, and since I have adopted this filtration I have never had a case of a blocked vehicle fuel filter....

Here is an interesting item on fuel-filtration by 'Racor'.... It specifically mentions a 1uM Running Clearance of pump internals....http://www.encyclopedia.com/doc/1G1-72983644.html

__________________
http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....