The 300d has a 20 micron prefilter and a 10 micron final filter. Why would you filter below these numbers? If the car was designed to run without filtering any finer then what would be the point?

Because Diesel is generally clean from the start unless the holding tank is contaminated. It also hasn't had 1,000lbs of fried junk food dunked in it.

All my BioDiesel is filtered to 1 micron, then passed through a 1 micron Absolute filter....

Due to the nature of the vehicle fuel system, you dont want particles running round the fuel-system.

The effects of particle and wear are slow and cumulative....

Your car may be fine for say, 20K miles by filtering your fuel to 20 uM but after that may start to show signs of wear...

If you filter to 1uM then that figure could well be times by ten or more....

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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....

If the 1 micronfilter is on you car; who makes it and how about the filter number.

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84 300D, 82 Volvo 244Gl Diesel

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....

What material are the Aqua 10 filters made of? Are they Cord/string wound filters? How much did the filter housings cost?

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84 300D, 82 Volvo 244Gl Diesel

They are of the 'Melt-blown' variety, a 'depth' filtration media...

Check out here, where I get mine from...http://www.mearesolutions.co.uk/

UK based, but I guess you must have summit similar there....

__________________
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....