Less then a half quart is apparently sitting in my 1NZs.
LSjr Video "Facts About Oil Changes"
- Thread starter fantastic
- Start date
garageman402
$100 Site Donor 2026
I've seen these capacity listings before & wondered if the dry capacity is with or without the filter? They give three numbers, I would assume (!) the dry capacity is without the filter?
I would assume it is with the filter. If the engine is dry from a rebuild or new, it likely doesn’t have a filter on it, so will need one to be operational.
garageman402
$100 Site Donor 2026
Maybe that is LSJr's point? More click bait then tell us it does, in fact, increase efficiency, but only near the end of life? Hmmmmm
garageman402
$100 Site Donor 2026
I would think so too, as the engine needs to be run to fill all the galleys & other 'dry' areas that won't drain & it can't do that without the filter in place. Still vague in my opinion.
The "dry oil volume" spec is if the engine has absolutely zero oil in it anywhere, including the oil filter. Like if you tore it down completely, cleaned it and put it all back together. Or if it was first manufactured and oil was never put in the engine. The "dry volume" would be the amount of oil required to fill the engine to the full mark on the dipstick after it's been ran and all the oil was distributed throughout the engine. If you drained the oil, then a specific volume will drain out, and if you remove the oil filter then another additional volume of oil will drain out. That's how they get all 3 of the oil volume specs.
If he's assuming that, then it's misleading because no ISO 4548-12 test is ever done to the point where the filter gets so clogged that the efficiency increases. Most ISO efficiency testing is stopped when the dP across the oil filter is 8 PSI which ensures the filter is loaded pretty well and that the bypass valve doesn't open during the test which would invalidate the test. That's seen in Ascents ISO testing, and also in the Kitplane filter ISO testing. All those oil filters lost efficiency from new unloaded to 8 PSI of dP increase across the filter due to loading during the test run. Plus, it wouldn't make sense to run an oil filter to near fully clogged on any engine.
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garageman402
$100 Site Donor 2026
I agree wholeheartedly with what you're saying, but an attorney would point out that the filter does, in fact, filter more efficiently at some point during loading. He didn't say when.... So LSJr is not wrong.....legally....
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Sounds like what a defense lawyer would say. Anyone that buys into his "oil filters get more efficient with loading" based on it being nearly choked off completely and ready to go into bypass needs to sell their car and start taking the bus.I agree wholeheartedly with what you're saying, but an attorney would point out that the filter does, in fact, filter more efficiently at some point during loading. He didn't say when.... So LSJr is not wrong.....legally....
