Could smaller be better?

Joined
May 18, 2025
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9
Location
South West Florida
2006 Jeep LJ/TJ 4.0 150K and still ticking. Want to run the absolute smallest oil filter I can, in an effort to get pressure up top to the ROCKERS faster. I've opened up my last three filters at 2-6K with no debris. The specs on the xg3614 match and I'm pretty sure it was stock on a bunch of Toyotas. It looks tiny compared to the stock size but the specs are there and everything matches up! Can anyone think of something I haven't. Also I feel would just be easier dealing with the smallest unit possible especially when it's mounted horizontally. I'm patient and willing to learn thanks in advance.

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If the oil filter is full of oil because the adbv is working then the size shouldn't matter. If the filter are letting oil drain out then smaller could be better but it's not likely. Many people have had their lifters clear up after using high detergent oil which was hdeo for a long time but valvoline restore and protect is a better choice. I think soneome said they had their tick go away after 300 miles?. I'd try that first. OIl filter size shouldn't matter here as they're supposed to be silicone and better than nitrile however someone posted a pic of a fram filter where the holes were not fully sealed by the silicone adbv so oil could seep through. Maybe try a carquest premium oil filter instead. I'd also keep using the larger filter.
 
With a horizontal mounted filter, the center drains regardless. This particular filter is more than adequate for my 2-6K oil changes. My oil analysis have came back stellar. I'm just looking for a way, that hasn't been thought of, to build oil pressure faster. Even if only a split second, that split second, over the life of the engine could add up to minutes or hours.
 
as state, if the ADBV is working correctly it doesn’t matter how big the filter is after initial start. it’s a steady flow system, volume in=volume out as fluid is basically incompressible.
 
With a horizontal mounted filter, the center drains regardless.
I doubt that unless the ADBV leaks, or the engine's oiling system drains down regardless of how good the ADBV seals.

This particular filter is more than adequate for my 2-6K oil changes. My oil analysis have came back stellar. I'm just looking for a way, that hasn't been thought of, to build oil pressure faster. Even if only a split second, that split second, over the life of the engine could add up to minutes or hours.
If the engine sits for just an hour does it tick on start-up. If it sits 3 hours? What's the shortest time it's sat and still ticks on start-up?
 
Overnight, with a cold start. I'm not really trying to quite them down. I'm just thinking outside of the box. If a smaller filter is adequate for someone who stays on top of their maintenance, it could THEORY and probably by an amount so miniscule thatI'llnever be able to measure, build pressure to the top end faster.
I AM however getting flamed by the Facebook God's for my use of the FramXG.
 
I'd first suspect a leaking ADBV in the filter. The size of the filter shouldn't matter if the oil doesn't drain out of the system with a good sealing ADBV. Put a Carquest Permium or a MicroGard Select on it and see if that makes any difference.
 
Well, if bigger is better, can someone recommend something this size but with the acceptable micron ratings and correct material for the anti drain back valve? Most of the OG Jeep 4.0 crowd runs Wix/Napa 1515s.
 
Those 51515 and Ph8a are the way to go. Same price as the smaller ones and theoretically less likely to go into bypass. You can still get the OG XG8A on ebay.
 
Just to explain something on U-tube principle - the fluid does not care the shape or size of its container in static conditions - just elevation delta and fluid density … Hydrostatic …
The upper end of a motor is the high side of the U-tube - and a conventional ADBV is the pretty much the low side …
All the rest can look like a King Cobra - but again balanced column vertical height on the high side (and density) - then the dP against the low side - that is all that ADBV will “feel” - regardless of other theory … It’s a tiny pressure …
 
I hate to tell you this, but you probably don't have noisy lifters and instead have a cracked piston which is super common on 4.0l's. I've got one in my driveway that's been clattering for at least a 100k miles, so they can run a long time that way. Messing around with oil viscosity or filters won't change anything unfortunately.

 
I hate to tell you this, but you probably don't have noisy lifters and instead have a cracked piston which is super common on 4.0l's. I've got one in my driveway that's been clattering for at least a 100k miles, so they can run a long time that way. Messing around with oil viscosity or filters won't change anything unfortunately.


An 06 with a cracked skirt is possible. If may have a broken skirt, stuck ring and noisy lifters. That being said the Valvoline R&P has almost eliminated the tick at cold start ups and it's completely gone on a semi warm or hot start.
 
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