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All harmful myths come from some self-proclaimed "expert" running his head without doing his homework - doesn't take much research, incl remembering the lessons that should have been learned in Science 101, to find out that air does not flow thru oil in oiled-mesh air filtration - as air flows thru the interstices in the oiled mesh, the oiled mesh becomes statically charged, which then attracts the dust particles - faster the flow, greater the charge - the collected particles then add to the mass of the oil droplets, with resulting increased charge, resulting in increased filtration as the filter becomes 'dirty' - up to a certain point, at which time the filter must be cleaned and re-oiled - manufacturer's maintenance requirements are therefore based upon engine maf/time
The basic problem is not the oiled filtration, but the available real estate - the KJ CRD filter is identical in dimension to the KJ V6 filter, but the Diesel draws full displacement thru that filter on each stroke, where the V6 gasser (patooie!) runs at less than 30% throttle most of it's life, for 30% displacement flow - add the turbo to the CRD, which can increase flowrate thru that smallish filter as much as twice the FWOT flowrate of the V6, and we got problems right here in River City, folks: takes a much larger filter for that kinda action, and we got no available real estate for a larger filter - double the physical area of the filter, L" x W", and an oiled filter would become more practical - increasing the cross-sectional area, the depth, only increases the quantity of dirt that the filter can accumulate, with increased restriction, but does not increase initial air flow capability - double-sized filter would still require periodical cleaning\re-oiling, but the increased area would prevent\reduce vacuuming the oil in the turbo draft - take a quick look under yer hoods to see that we don't have that option, so an oiled-mesh filter, while much more efficient at increasing filtered air flow, is not practical in this application
As a side note, all air filters were oil-bath oiled-mesh when I was a young lad, long ago in another century - paper-element filters were designed for convenience to the auto-repair industry, reducing labor, increasing profits, beneficial to oem mfrs from reduced real estate requirements in the engine bay
That's my story, and I'm stickin' to it........................
_________________
'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go
Last edited by gmctd on Wed Dec 10, 2008 1:50 pm, edited 4 times in total.
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