Larger Filter for Outback

[JBRIII]

Guys,

I currently use Purolator PureOne part PL14660 for my wife's 96 Outback Wagon. It is a relatively small filter. Does anyone know if there is a taller filter that would hold more capacity for this application?

Thanks,

John

 

[Patman]

It's the 14460 actually, and you have a few options.

The 14460 is 3.15x2.95, with an 8-10psi bypass and no antidrainback.

You could also go with the 14619, which is 3.67x3.66, with an 8-11psi bypass and an antidrainback.

Or the 20073, which is 2.98x4.83, with an 8-10psi bypass and an antidrainback.

Or the 24458 which is 3.15x4.01, with an 8-10psi BP and ADB.

Or a superlong 34480 which is 3.50x5.45, with a 9-12psi BP and ADB.


I think the 24458 is probably your best bet.

 

[Malibu]

JBRII one option is to use genuine Subaru oil filters because they have
been optimized for your Outback by Subaru engineers. You can
have them shipped to your doorstep for less than the price of
a Purolator Pure One if you buy them online
http://www.spimotorsports.com/Catalog/subaru_genuine_oil_filter_601033.htm
http://www.1stsubaruparts.com/

 

[JBRIII]

Guys,

Thanks for the replies. Don't you hate an accountant with dyslexia

I meant to say 14460, just didn't have one in front of me at the time. Although the PureOne's I just received do have the antidrainback valve, even though they're redundant in a vertical mount.

I'll check out some of the other sizes as well. Appreciate the help. Just wanted a little more filtering capacity than OEM.

John

[ January 23, 2003, 11:21 PM: Message edited by: JBRIII ]

 

[Malibu]

JBRIII you might want to take a hacksaw to your oil filter one of these days. As has been pointed out on the filter forums, hardly any dirt and debris can be found in a filter after 5000 miles.

There are downsides to using larger than stock oil filters too, like a bit more delay in building up oil pressure when the engine is first started. Most engine wear occurs at startup. On a old Toyota 2F Landcruiser, I found the engine built up oil pressure noticably quicker when I switched to the new, smaller, oil filter Toyota came out with for this engine.

 

[Patman]

If the filter is vertical then the longer filter should not create any delay in pressure on a cold start. My oil pressure gauge moves up just as fast with the long filter on my car as it did when I used the short one.

Besides, a good antidrainback valve will hold in oil on a horizontal mount. If it's not, then you need to try a different brand with a higher quality antidrainback.

 

[Al]

quote:

---

Originally posted by JBRIII:
Guys,

Thanks for the replies. Don't you hate an accountant with dyslexia

I meant to say 14460, just didn't have one in front of me at the time. Although the PureOne's I just received do have the antidrainback valve, even though they're redundant in a vertical mount.

I'll check out some of the other sizes as well. Appreciate the help. Just wanted a little more filtering capacity than OEM.

John

---

The anti-drainback are not necessarily redundant. Depending on the onfiguration of the oil galleries the valve will keep the gallery full of oil.

And as Patman said there should be no difference on startup since both filters are full. I personally always prefer the larger filter. As long as the bypass settings are the same there is no reason to select a smaller filter. The one way engineers "optimize" a filter is by selecting one that thas the proper size to fit all mdels. I'm just saying that sometimes they select a filter for convenience. Not saying Subaru does it-but Nissan uses a teacup size filter for -all- of their carline models after year 2000.

 

[Ken2]

I think Al is saying that the antidrainback valve will keep the oil from gravitating down into the sump.

I disagree that it will keep the oil in the higher parts of the engine...I think the oil will flow down into the oil passages in the lower parts of the engine, all downstream of the filter. What keeps the hot oil from flowing by gravity from the upper parts of the engine down to the oil ports for the crankshaft, and out and into the sump? No, I don't buy the concept of coheasion and adhesion of the oil...sure, enough oil remains on the metal surfaces for safe starting without damage, but the oil passages don't remain full, not on all the machinery I've inspected and repaired in my 30+ years doing machinery maintenance for a living.

The antidrainback valve serves to keep the filter full of oil and the dirt inside the filter when the filter is mounted other than straight upright...you sure don't want that oil flowing back into the engine and backwashing the filter as if flows through a leaky antidrainback valve.

Ken

 

[sprintman]

Interesting as I use Sube OEM filter on my Outback (made by Purolator I believe) but PureONE on my Mazda turbo. The OEM is small but I cut one open after an Auto-Rx 500 mile clean and very little to see. I used Auto-Rx with Delvac 1 (wouldn't now) and maybe the cleanup was not what it should have been? Ahh still learning!!

 

[JBRIII]

Al,

I'm confused. If a filter is mounted in a vertical (up and down) position how can the oil flow upwards out of the filter and back into the engine when it is stopped?

John

 

[Al]

quote:

---

Originally posted by Ken2:
I disagree that it will keep the oil in the higher parts of the engine...I think the oil will flow down into the oil passages in the lower parts of the engine, all downstream of the filter. Ken

---

As was mentioned-the oil won't drain out of the verticle filter. But like When the oil comes out of the center of the filter(outlet) the oil gallery is heading upwards. Lets say that oil gallery goes up 6 inches before it splits off into separate passages: with the antidrainback valve-that portion of the gallery should stay full. If there is a branch off at that point-depending on if that branch goes up or down will determine how much of the gallery above that 6" point stays full. I am just guessing that this is why GM specifies an anti-drainback valve on some verticle filters. I could be wrong on this-but it seems logical.