Quote:
Originally Posted by ecp
I am wondering if the spin on filters are collapsing internally?
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Extremely unlikely; spin on filters are mechanically much better made than the factory cartridge filters (which are much more prone to failures). In all the years I have been changing customer's oil filters and cutting every spin on apart to check the media, I have never seen one even distorted much less collapsed. It just doesn't happen.
Your cold start oiling issue rests elsewhere (pump, oil itself, bypass pressure relief system, etc.).