jscanlon wrote in message


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Always use the filter type the manufactorer reccomends. Polishing (BS
in my opinion)


no bs at all...

my permanently installed independent polishing system draws about 5
gallons (100 gallon tank) every 6.5 minutes through a racor 1000 with
2 micron (can switch to racor 900 when 1000's vacuum increases)

the engine has a racor 500 with 10 micron , then racor 500 with 2
micron, then the perkins 4-108 engine mounted filter.
as rich points out the 1000 elements aren't much more expensive than
the 500 elements, don't let the 500/1000 designations throw you, the
surface area of the 1000 is MUCH greater than twice the surface area
of the 500......