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Great Quality Oil filter: But defects in manufacturing can exist even with the best of product
on June 13, 2015
I use wix filters exclusively in my shop. Great quality.
As with any product, a defect can slip through sometimes.
Today, I was changing oil and filter on a 2001 Camry. I happened to look inside the Wix filter 51394 I removed (originally installed in April 2015) and noticed that it appeared that an internal sealing cap on the inside was missing because I could see part of the filter element. I compared it to the new wix 51394 I was installing and the new filter did have an internal sealing cap on the inside. I pulled a couple of other wix filters off the shelf and notice they also had the internal sealing cap installed.
What caught about attention about this old oll filter was that once I removed it, it did not have any oil that drained out after removal. Not sure what role this internal sealing cap plays as part of the anti-drain back function of this filter.
The missing internal sealing cap had not dislodged; it was not loose nor stuck in the inside of the old filter. It was also too large in diameter to exit the open end of the filter.
I took pictures and went to Wix website with the ideal of giving them some feedback but they did not have a link for technical contact.
This is not a slam against Wix filters; just shows defects are possible in any product. It pays to check all replacement parts closely before installing.
Even thought this internal sealing cap was missing, I do not think the filtering was compromised during the past oil change interval. The oil had 5000 miles on it since last oil change and the oil was not very dirty in appearance.
Both filters made in USA
Edit: the picture shown is the filter with the missing internal endcap seal ring.