Originally Posted By: gregk24
Originally Posted By: ZeeOSix
Originally Posted By: 901Memphis
Now you see why I prefer Fram. Metal encaps on thin media = no room to wiggle = rip
It's been said many times that the reason these Purolators are tearing on the pleats next to the seam is because the pleat spacing is way too large, and the force from the oil flowing upon these pleats tries to push the pleats over, which puts stress into the root of the pleats (where they are glued to the end caps) which causes the (somewhat brittle) media to tear.
It seems the spacing has increased in the pleats near the seam. Not sure if Purolator is trying to reduce the pleat number and/or there is a manufacturing process that caused the pleats to be widely spaced near the pleat.
Bottom line is Purolator NEEDS to fix this on-going issue fast.
I emailed Purolator a link to this thread, and the previous thread(s) showing reports of torn media. I would HOPE Purolator's engineering department would be perking up on this what seems to be recurring failure.
I dont know if you have check out the Fram Extra guard lately, but the pleat spacing on those are much wider than the Purolators. Even the TG 7317 I cut open had some large, un-even pleat spacing, but you dont see any Fram failures. I think the media itself is weak, and then once the pressure's on they tear.
You are both right. Puro's media does not seem to be able to handle the higher forces of wider pleat spacing. Fram is the king of wide pleats at the seam yet their media rarely tears. I've cut quite a few and also posted before that IMO Fram's media is stronger than most. That's how they get away with less of it. But I still wish they'd use more anyway.
I just used a Pure1 on my son's Chrysler a month ago, and still have a couple Puro's in the stash which I fully intend to use, but won't likely be buying anymore. Probably wouldn't have anyway though, I've pretty much settled on Napa Silvers and Tough Guards for future use.