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FWIW, and as wondered, possibly expected, the latest PH3614 is no longer the same. It has the Champ plastic cage center tube and Champ date code. A base plate like I have never seen before, different, big flat area around center with a 3 stamped. So not cutting it open yet. I like it a lot for...

For interest I bought a Bosch 3325, thinking it was a Purolator design. It is made in Mexico, different baseplate, bypass, all different than Purolator. It’s also about midway in height between a standard XG4386 or PL14477 size and the 4967 or 14476 size. I don’t know if this is a new thing. It...

I taped a piece of oil filter media to an led flashlight. It’s easy to see sparkles of light here and there by eye, and more is shown by moving side to side as not all holes are straight through. I was unable to get pictures of the sparkles from holes but they are there, small and bright...

I have this red Purolator with date code F01004E2. BTW while searching for answers on this code I saw Mann spec sheets being discussed a good while back. One had the classic beating the higher models. I wish people would have told me this was a topic long ago before I went down my spec sheets...

If oil is sampled and tested from a run, then another filter fitted and run again for maybe an hour, then sampled and tested again, wouldn’t this show which oil filter filters best? Assuming even sampling and testing, and using the same oil. Or done many times would even out the errors of...

-bypass spring, no wavy metal on this one. Very minor ruffles. -Smaller left to right Boss 4967, Fram 4967, Toyota N1, and Pentius 4967. -cut filter, gap is bypass spring pop up -general construction PH 4967 -side view with bright light from below - opposite side bright light Spring pressed...