Hi, all.
Say, The Purolator Pure One filter is frequently listed on BITOG as being one of the best oil filters. This is widespread here and while I'm new I am already developing an appreciation for BITOG member's objectivity and "give a darn" attitude. So I'm looking to be a convert. The Wix filters I've been using seem respected as a boilerplate type of filter but I'm thinking the Purolators might be better.
I'd like to switch if that is true. I'm hoping someone here can point me to some empirical test data to put to rest some rumors regarding:
1.) Is it true the Pure One flow is reduced due to so much filter media jam packed in and little/almost no space between pleats? Where can I find high speed flow comparisons between filters - both when new and when "used" or saturated with normal dirt?
It's hard to criticize a company for trying to add value by stuffing in as much high quality filter media as possible... still, did the "more is better" thing get a bit carried away or is that pure internet bunk?
Are the pleats packed so tightly that dirt holding capacity is reduced instead of increased?
2.) Does the Pure One have the "45 rpm record" flat spring instead of a coil spring? If so, does it permanently deform upon first bypass causing "forever permanent bypass" as many of the flat springs supposedly do? That is, the flat springs aren't really springs at all; just soft metal that will compress but NOT rebound?
I've cut apart quite a few filters. On this particular point, it's my observation that the flat "springs" are in fact not springs at all. Every one I've come across is butter soft and has no spring to it at all. That's why I bring that web rumor up here; I consider it a valid concern for me at least...
Well, I sure hope you all can give me some links to test data. If not, I'm still convinced enough to buy a few, run 'em and then cut them apart to develop some opinions of my own. If I do, I'll post pics.
Thank you for your time,
Larry S.
10*B
Former ASE Cert MM, Retired
1998 Buick LeSabre 3800 Gen II w/UIM/LIM fix done recently
1994 Ford F150 4x4 5.8 "BRP" (big red pig - gas guzzler)
2003 Kaw KLR650
Browning BAR MKII 338... oops, that one doesn't use motor oil - yet!
My app is a totally mild and stock street car, so it's not like it's a race car or anything. I don't need ridiculous flow rates or a filter can rated to 600 psi.
Say, The Purolator Pure One filter is frequently listed on BITOG as being one of the best oil filters. This is widespread here and while I'm new I am already developing an appreciation for BITOG member's objectivity and "give a darn" attitude. So I'm looking to be a convert. The Wix filters I've been using seem respected as a boilerplate type of filter but I'm thinking the Purolators might be better.
I'd like to switch if that is true. I'm hoping someone here can point me to some empirical test data to put to rest some rumors regarding:
1.) Is it true the Pure One flow is reduced due to so much filter media jam packed in and little/almost no space between pleats? Where can I find high speed flow comparisons between filters - both when new and when "used" or saturated with normal dirt?
It's hard to criticize a company for trying to add value by stuffing in as much high quality filter media as possible... still, did the "more is better" thing get a bit carried away or is that pure internet bunk?
Are the pleats packed so tightly that dirt holding capacity is reduced instead of increased?
2.) Does the Pure One have the "45 rpm record" flat spring instead of a coil spring? If so, does it permanently deform upon first bypass causing "forever permanent bypass" as many of the flat springs supposedly do? That is, the flat springs aren't really springs at all; just soft metal that will compress but NOT rebound?
I've cut apart quite a few filters. On this particular point, it's my observation that the flat "springs" are in fact not springs at all. Every one I've come across is butter soft and has no spring to it at all. That's why I bring that web rumor up here; I consider it a valid concern for me at least...
Well, I sure hope you all can give me some links to test data. If not, I'm still convinced enough to buy a few, run 'em and then cut them apart to develop some opinions of my own. If I do, I'll post pics.
Thank you for your time,
Larry S.
10*B
Former ASE Cert MM, Retired
1998 Buick LeSabre 3800 Gen II w/UIM/LIM fix done recently
1994 Ford F150 4x4 5.8 "BRP" (big red pig - gas guzzler)
2003 Kaw KLR650
Browning BAR MKII 338... oops, that one doesn't use motor oil - yet!
My app is a totally mild and stock street car, so it's not like it's a race car or anything. I don't need ridiculous flow rates or a filter can rated to 600 psi.