Originally Posted By: HangFire
Originally Posted By: sayjac
Out of curiosity, if you still have the filter, how many pleats excluding the seam pleat, does shown PL14610 have?
46.
Thanks for that, and here's why I asked.
It pretty much confirms my thinking which I've posted before since the tear issue has become more prominent. Every PL14610 I've ever cut open has had 51 pleats not including the seam pleat, and I've never had a tear.
The tears only occur in the area right next to the seam pleat, which generally have a slightly wider pleat spacing anyway. If the media length is shortened resulting in less pleats, then the stress on those areas is increased, and perhaps the shape of the pleat adjoining the seam may be changed. But using my PL14610 results, whatever the shape of the pleat, it seems to me less media is the cause of the weakness.
In fact, the only Purolator I've had a tear with was a L144459 and it had two less pleats than a similar PL/L14459 I used before. And I'm fairly confident a similar L14459 tear pic that is very frequently posted also had at least two less pleats than previous L14459's. So it appears to me that the Puro QC folks need to address and make sure the media length and pleating is consistent with previous specs and the tear issue could be significantly reduced or virtually eliminated imo.
Below are pics of last two PL14610's I've run, both run significant oci's, the first ~7800 mi., the second 6500 miles, both with no tears. I'm currently running another PL14610 from the same lot a full 10-15% MM oci and I fully expect to see no tears, no issues. Be surprised if I do. My .02+
Pure One PL14610 ~7800 mi. oci/fci, no tears. 51 pleats
PL14610 ~6500 mi. oci/fci, no tears. 51 pleats