Recent content by bulwnkl

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    '13 Honda Ridgeline, Schaeffer 9000 5W20, 9k miles

    It's been a long time since I did a UOA on this engine. Pickup has 138k miles on it, almost exactly 9k miles on the oil (Schaeffer # 9004, 5W20). I've never seen UOA numbers anywhere near this low from a J35 in one of these pickups, but I also don't recall seeing many (any?) with >135k miles on...
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    HDEO and JASO

    Is that not the product which appears in the JALOS certification (or registration) list, here: https://jalos.or.jp/onfile/pdf/4T_EV_LIST.pdf ? Whether or no, JALOS has all registered / certified oils on their website. That’s how one determines whether a particular oil marketer generated the...
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    Are Amsoil EAO Filters Actually Better?

    I've never been especially impressed with the filtration efficiency of the Amsoil filters. They may be constructed extremely well, IDK, but the pre-buyout Fram Ultras were VASTLY better-filtering products. My understanding is that the Ultras changed media and _may_ no longer filter anywhere near...
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    Your Favorite Non - OEM Air Filter ?

    Denso’s presentation on the topic of their factory-fitted parts vs their dealer service parts vs their aftermarket parts quality has been posted here before. Factory-fitted parts are best. Dealer service parts are somewhat less, and aftermarket are less still. “Less” means lower quality or...
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    Fram TG vs. XG Oil Filter for 5K mile / 6 month OCI ?

    Soot is an ages-old Diesel engine issue. As was said, centrifugal separators are how it is removed from those lubes. One could consider employing the same on a GDI engine. I seriously doubt the cost-benefit is there, and the soot particles are likely not the same general size range. I am...
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    Found this interview interesting - Piston Rings

    Maybe. Piston ring - cylinder shear rates are much higher than HTHS tries to measure.
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    NV5600 - Amsoil Syncromesh UOA 46,500km

    It should slow as the VIIs are ‘chopped up,’ yes.
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    NV5600 - Amsoil Syncromesh UOA 46,500km

    I figured the gears ‘chopped up’ the fluid, not a filter.
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    2022 Mazda CX-9 - High Performance Lubricants PCMO 10W-20 - 4,897 Miles

    I’m only aware of field data, not journal publications, but perhaps I should re-phrase my previous question slightly: Is the thought that the HPL product will reduce fuel dilution as demonstrated by GC in fleet field data, or is it simply believed to better mitigate the effects of the same...
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    2022 Mazda CX-9 - High Performance Lubricants PCMO 10W-20 - 4,897 Miles

    I’m familiar with the opposing effects of oxidative thickening and permanent shear or fuel dilution. When I referred to my fleet data, I meant the fuel content as measured via GC.
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    Your Favorite Non - OEM Air Filter ?

    S&B would be my choice if they had one for any of my factory airboxes. They filter much better than AEM, AFE, or anything I know of other than the ultra-best AC Delcos. They even offer choice of serviceable oiled cotton or disposable dry.
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    Found this interview interesting - Piston Rings

    What I heard from that segment was: Cylinder wall finish, oil control ring tension (and design), and lube oil viscosity need to be matched as a system in order to minimize oil consumption. My first thought question was: Viscosity as measured how? The ring-cylinder interface is about the...
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    2022 Mazda CX-9 - High Performance Lubricants PCMO 10W-20 - 4,897 Miles

    Data from my own fleet, and I had thought the A6s, demonstrated otherwise. You answered my question, though, so thank you.
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    Using higher than recommended octane fuel can result in incomplete combustion?

    Again, not relevant either to the engine I presented or to the point of whether higher AKI allows higher output in a specific setting that offers improved fuel efficiency.
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