The OP wanted his Amsoil/Royalpurple filter, which is out of stock. If they fit his application, he should have no issue with the equivalent 9688/3593 equivalent. If he wants to use available full synthetic media, he'll have to switch to Titanium, Boss, XP, or Platinum. Not sure of too many other 7317 full synthetic media filters as Ryco is sold locally, and remember the name of the Canadian filter manufacturer purchasing full synth media. THAT IS ALL THIS THREAD IS ABOUT. We don't controlled the supply change.
He may also be able to locate, if he's lucky, some of the OG FRAM Ultra (XG) filters that are still synthetic. That's another option, depending on how old the stock is locally at the parts stores and Walmart.
I am not here to debate. I did some time with a two major filter companies and see how the internet throws off everything into extremes. With some members, its the same ******** argument over nothing, OVER and OVER again. Look at me cause I know better. Some think they do and they don't.
Yet that's exactly what you are doing here...
BTW, one of the best UOAs that I've seen is without a full flow filter which is pretty scary when so many have trust in UOAs and there megamicron super filters, especially when many full flow filters spend a considerate time in bypass and load up quickly. I remember some 'non bench tests' but real manufacturer 'engine tests' where typical filters were loaded up within 3000 miles. There is a relationship with engine soot and test powders but its not as close as we want to believe. I wish all my engines produced standardized ISO quality debris for my filter.
Amusingly, that's one of the reasons we shouldn't use UOA's for "wear" data. The particle size range they sample is below what is captured in your typical oil filter, sub 10-microns, with most of it being below 7 microns. So "wear rate" as seen in a UOA is a very limited picture. If an engine is shedding larger particles, you aren't seeing them in the analysis.
On the soot test, I posted a link to an article on that recently, but I'll share that again here:
In this work, an investigation of soot-in-oil samples drawn from the oil sump of a gasoline direct injection (GDI) engine was carried out. Soot partic…
www.sciencedirect.com
GDI soot agglomerates are typically 100-300nm; 0.1-0.3 microns. Clearly, nowhere near large enough to end up in an oil filter.
GDI soot particles, non-agglomerates, are typically 8-43nm; 0.008-0.043 microns. Even smaller.
Quoting later in the article:
GDI soot agglomerate size was found to be comparable to diesel engine soot-in-oil as reported in literature. Soot-in-oil agglomerates drawn from diesel engines show a modest branched morphology, and exist in clusters and chain-like structures with average hydraulic diameter of 100 nm [16]. Similar agglomerates were found by Clague et al. [7] in a study in which soot was compared to black carbon. Diesel soot investigated by La Rocca et al. [20] had an average skeleton length of 131.8 nm measured from TEM projections and were composed of spherical primary particles of 12–40 nm.
This particulate clearly consists of material that's significantly smaller than the ISO test dust.
At that time, there were quicklubes being slandered heavily for their 3k/3mo interval, which for all practical purposes, was better than any OE recommendation since the media flow rate dropped to a point where bypass time was excessive. We've come a long way with media and oil, but technology gave us other variables not considered until all hell broke loose... like GDI soot, fuel dilution, both bringing down intervals that no one wants to adapt to. Never maintaining anything is what a consumer wants and enjoy the price for their laziness. R&D at the automaker is seriously excessively fallible.
As noted above, GDI soot, like diesel soot, is typically too small to get caught by the oil filter. Fuel dilution definitely has a negative effect on lubricant health, but not pertaining to filter longevity, but rather lubricant longevity.
And yes, I'll take the Wix XP and Napa Platinum and use it without worry for my OCI. Amsoil learned the lesson concerning filtration flow already and haven't heard of the issue with 'RoyalPurple' but those two brands combined are a drop in the bucket. I would think that the manufacturers would advise better but doesn't look like they did. This isn't the 1st time Amsoil R&D, engineering, or purchasing screwed up when it comes to filtration.
Again, you are ignoring, I can only assume intentionally, the equally or more efficient FRAM Ultra (XG) filters when trotting out the AMSOIL high efficiency example, or that the non-15K filters weren't affected. Why?
Side-stepping that repeatedly isn't helping your argument here.
If anyone wants to debate filtration, spend a few years at Wix, Fram, Champ, Donaldson, Luberfiner, or Purolator, and definitely not in the 'marketing department'. Come back when more aware especially if spending time in R&D, testing, or failure analysis. This forum doesn't see 1/100 of the proprietary data from filter manufacturers. We get the best of the marketing aspect, and testing data no more better than 'projectfarm' which seems to be slandered often here.
I'm curious why you still participate if you think so lowly of the membership here and clearly so highly of yourself? You have absolutely no interest in discussing this material, you dismiss standardized testing, present yourself as an authority, but demonstrate no willingness to actually debate the merits of the positions you've presented. Rather, you just want your statements accepted out of hand because you are the one presenting them, topped with a rather specious appeal to authority with regards to allusions of somehow having been involved with one of the filter manufacturers in some capacity but never getting into the details of what that really was.
Greasymechtech said:
The OP asked a simple question and got his answer. Because someone has to disagree with the answer and it becomes the same old stupid debate over and over. OP isn't participating or requesting substitutes. Lets see how many pages and years we can keep this thread going for nothing.
The OP has never confirmed whether he was looking for those specific filters due to their efficiency, or due to the media being synthetic. If efficiency isn't the concern and he just wants synthetic media, then I agree with your recommendation. If on the other hand, he wants efficiency, then I don't. Until the OP replies back with clarification, this question is still unanswered.