^ Forums are generally for providing information or requesting information...your thread/post did neither..
..and is therefore worthless.
What kind of replies did you expect to receive with such a useless opening post?
What did you see that was so unbelievable? Was there bacon in the filter? Maybe a unicorn turd? Or was it filled with 1,000 tears from an Indonesian sweat shop full of child laborers...
Also, if you know nothing about oil filters what is there to even be shocked about?