larger oil filter??

[06wrx4me]

Anyone use a larger than stock oil filter in their car?

[pweizman]

Fram is bigger than stock...so yes.

I think most aftermarket filters are bigger than OEM...pureone, purolater, etc...

[06wrx4me]

I understand that the housings are slightly larger on most aftermarket crossovers, but have heard that they have the same equivalent filtering area.

I'm looking to find if anyone is using a substantially larger oil filter like 20% increased capacity, or knows the PN for one.

For example on my old Chevy Truck it called for a Ph 3960 but you could step up to a PH8 which was like 30% larger and would allow slightly more oil capacity.

[wrxdrvr]

I use AmsOil oil and oil filters, both fully synthetic and the oil filter is 98.7% efficiant at stoping 15 micron dirt from pasing through where as paper filters are like 39%.

[mikeythejew]

Supertech ST7317 is bigger and fits. You can also use a purolator L14610. I had a better UOA with a supertech then a pureone btw on a nissan some years back.

[mycologist]

They used to have a larger filter for the WRX stock when I first bought mine (2003), and the small one was just for the STi. They stopped making the large one because of heat soak and IIRC there was a TSB on it back then. So I like my small Subaru oil filter.

[Tbishop]

you should be very careful about putting any filters on your car other than the one that is specified.Different filters have different working pressures and some have bypass valves that work on different pressures.putting the wrong filter on your car could cause oil starvation!!!!!.one reason subaru switched to a smaller filter is because of heat soak from the manifold from the larger filter.im sitting 10 feet away from around 7 thousand oil filters as i type this and i happen to know a littel bit about them.

[pweizman]

.im sitting 10 feet away from around 7 thousand oil filters as i type this and i happen to know a littel bit about them.

Allied Signal?

[Tbishop]

no just some one who has seen the effects of a wrong oil filter installed.some u can get away with some u can't.but if you want to know what will fit i can tell you, i just dont advise doing it. here is purolator# stock is L14612,larger is L14610,L14620,L24458.fram # stock is PH6607, larger is PH7317,PH3593A

[SD_GR]

The PL14610 is listed as stock in the Pep Boys/Puro ref books in stores. It has been for years, and it does resemble the initial ...A60 filters from SOA (made by Puro).

Fram 3593a and the Supertech (Wally) filter with the same number are also listed as stock by the respective books on site at stores, and/or the LCD screen gizmos.

14610 and 3593a are both larger than Subaru ...A80 and ...A100 for reasons having to do with distance to the exhaust (in other words, Subaru changed suppliers for reasons having nothing to do with the distance to the exhaust). If that's clear, great, as I wrote it and I don't understand it myself. I use either size and just don't care.

The PL14612 is rarely stocked down here by anyone I know of, from larger stores (X*marts and the like) to auto parts stores (Pep, 'Zone etc.).

Any filter maker should provide you with bypass pressures and specs, most via email. However, I do mean "maker" so if you're interested in a Mobil1 filter, for example, contact Champion Labs and so on.

To the Amsoil user, check out today's thread started by 302 regarding the oil TSB.

[pweizman]

The PL14610 is listed as stock in the Pep Boys/Puro ref books in stores. It has been for years, and it does resemble the initial ...A60 filters from SOA (made by Puro).

Fram 3593a and the Supertech (Wally) filter with the same number are also listed as stock by the respective books on site at stores, and/or the LCD screen gizmos.

Funny...I think my 'Zone lists PH6607 as stock for Fram. It seems to be only marginally bigger (10%-15) than the SOA filter.

Patrick

[SD_GR]

Maybe the difference is year specific. This is what happens when I search for stock filter replacement for 2.0L turbo '02 Impreza:

http://autozone.com/addVehicleId,274...leSelected.htm