Do jeeps handle oversized filters?

[wn1998]

I have read many posts on oversized filters. I plan on doing long OCI's 7-10k with GC and LC in my 99 2.5L. Anyway, I think an oversized filter such as the Napa Gold 1515 would be a good choice just because it has more "filter" media and can hold more "junk" in the filter while doing a longer OCI.

However, are oil pumps made to push oil through the system with the stock sized oil filter? Will the use of an oversized filter effect oil pressure, oil flow, or decrease lubricity in my engine in anyway? Basicly are there any downsides of going with a larger filter?

 

[RF Overlord]

I'm not a "Jeep guy", but I've never heard any reason not to use an oversize oil filter on ANY motor, as long as the threads, gasket, baseplate, etc. are equivalent to the OEM filter, and you have sufficient clearances from chassis/suspension components (and also from the ground) so that the filter isn't physically damaged in some way. Also be sure the intended replacement has an ADBV if required.

I use the AC Delco PF52 (or a clone) in place of the specified PF-47 on my company-issue work van (2001 Safari 4.3L) with no problems. Also, lots of 4x4 guys use remote oil adapters with one or more huge filters, with no problems, either...

[ October 11, 2004, 09:30 AM: Message edited by: RF Overlord ]

 

[labman]

The only real down side to an over size filter is clearance issues. A true oversize should give less resistance to flow at any dirt loading. Likely that is an unneeded improvement. Still why not.

RF overload pointed out some important things. You also need to be very careful about bypass valve. Some engines must have a bypass in the filter, not ADBV. Some filters don't have them. The last point is to make sure the filter you substitute actually has more filter area. You could end up with a big, empty orange can hanging down where it could get hit and leak.

 

[Gary Allan]

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However, are oil pumps made to push oil through the system with the stock sized oil filter? Will the use of an oversized filter effect oil pressure, oil flow, or decrease lubricity in my engine in anyway? Basicly are there any downsides of going with a larger filter?

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The flow will always be the same regarless of media size. This assumes that you're under the threshold of the internal oil pump bypass/limit setting. The only difference will be the pressure dissapated over the resistance of the filter ..or how much will be filtered or bypassed. The larger media, should in therory, drop less pressure across it (all other things being equal).

quote:

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My neighbor has been using the Napa Gold 1515 filter

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This is the 51515 Wix filter (just drop the "5" to get the NAPA Gold #, (5)1773 is even longer ..and the shortie (your current one).....anyway ALL of them have the same bypass specs.

There is no downside to this, IMHO. I've now reduced my entire fleet to the 1515 if I want to. Mopar/DC and Ford seem to like to share the same filter land/boss and preference for threads. The only issue is clearance (as was said).

 

[Ryan00TJ]

My brother runs the 1515 size on his 98 4.0L TJ and I run the 51773 1 qt capacity filter on my 2000 2.5L TJ's remote filter mount. Both engines have exibited great used oil analysis. As long as you have room for it use the larger filter. BTW the 51773 filter will not fit the 4.0 or 2.5 engines filter mount as it is too long. You need a remote mount for it like I have.

 

[Gary Allan]

It will fit on my son's Cherokee 4.0. He has a rear faceing filter mount.

Hmmm...maybe this adapter can be fitted on the other blocks .....(thought cloud forming)

 

[KJA426]

My neighbor has been using the Napa Gold 1515 filter on his 2000 2.5 Jeep since it was new. No clearance problem or any other problems. I also use that size filter on my Dodge 4.7 instead of the shorter 1085 sized original.