Air filter issues

I have 90 D150 with a 318 La and I've been having issues of it tearing apart cold air filters at the end like this, I've been through 3 filters in the last 3 months and they're not rubbing on anything and I've been using the filter oil so I was curious if anyone had an idea as to why because I've never encountered this before

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You don't describe your method of cleaning them, what you're cleaning them with and why you'd need to clean 3 of them in 3 months.