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Originally posted by Winston:
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Show me where the endcaps failed to hold a seal with the filtration media. Your point about buckling is an entirely different issue, but even that never resulted in unfiltered oil passing through the pleating, did it?
Your question was regarding the suitability of cardboard for endcaps. These photos showed endcaps that contributed to the buckling of the media. The buckling of the media contributed to bits of media blowing throught center tube (possibly flowing through the oil galleys). Therefore, Frams cardboard endcaps are not suitable for use in an oil filter.
Winston: is this what you are refering to?
I suggest you ask Fram, why for 20 years or so they have continuously used cardboard endcaps and not come to the same conclusion you have?
You take a gander at some pictures that were used on a vehicle for 4,500 miles and use your deductive powers to suss out Fram endcaps are terrible and that's why the pleats look like they do. Yet Fram has had this design for at least 20 years that I know of. How many of those do you think they've sold in 20 years or so?
But that still wouldn't be good enough for you because you've seen pictures.
There is no doubt about the evidence. The pictures are what they are. The mileage on the filters may be near 50% longer than the drain interval. I've asked before..name me one product you buy where you expect to use it 50% beyond it's service life. ( When you buy 40,000 miles Goodyears or Firestones..do you expect to get 60,000 miles out of them?)
There are a number of factors you've not told us about this filter or if doubleclutch ever did either as it was his filter:
1: What type of oil was used? And was the same oil used in the previous oil change?
2: Was oil analysis used, and if so what was the report. Was there any water or coolant present per the analysis?
3: Was any oil additive or cleaner used?
4: What was in the bottom of the can when the filter was cut open?
5: Total miles on the vehicle?
What I see is an over extended drain interval where the oil may also had a problem which contributes to the filter looking like it does. I also do not see any particular problem whereby the pleats have ruptured which would allow contaminant downstream.
You can speculate all you want on why the pleats are not straight but if they hold together, they have still done their job.
Anyone who wants to post some pictures needs to give as much data as possible. When it is "your" car, you should know what you've done with your oil changes. Don't you agree?
For instance:
Changing brands of oil when you've primarily used one particular brand to another ( Say Castrol to Valvoline) can impact the filter. One oil brand has a particular detergent package. You engine develops a pattern to that detergent package. When you switch to another brand of oil, then the new detergent package will clean your engine in ways your long time previous oil didn't. Sometines the filter can handle the change. Other times the filter can be very dirty when removed.
If one uses some engine cleaner product, you have to expect the filter will plug quicker. Which is why cleaner products say just use their stuff for a limited mileage. Again, less expensive filters might have a problem if they become overloaded or the pressure relief valve at the oil pump gets stuck and over pressurizes the oil filter.
There are so many nuances that filter companies have data on that to post some of them in here, some people would take that as "excuses" or worse. But engine companies and filter companies have reams of information about how and why filters have problems.
Which is why the more data one posts, the more things can be eliminated as probable causes.
Post a picture with no or limited information and speculate all one wants.
I would await your explaination of my oil analysis on a Super Tech clicker valve filter which lasted 9,000 miles and had no problem and a "clean" oil analysis v the pictures posted previously of a clicker valve filter with pleat problems which "apparently" didn't go 9,000 miles.? I guess I was just "lucky"...
It's not the filter...it's the conditions the filter was subject to. Same with the Fram...