I've cut a number of used filters open now and I must say, I've never found anything in them visible to the naked eye. The last one was a filter from my 220,000 mile Nissan and used during the Auto-rx rinse phase. Nothing visible in it either. Dirty oil in the can and that's it.
I'm going to let it dry out some and look at it with some magnification and see if I notice anything.
My gut feeling on this is that the old tale about filters plugging after X number of miles is a myth with modern oils and engines. It looks to me like as long as the media is still in good shape that changing them during long drains for fear of plugging is not a worry...
I'm going to let it dry out some and look at it with some magnification and see if I notice anything.
My gut feeling on this is that the old tale about filters plugging after X number of miles is a myth with modern oils and engines. It looks to me like as long as the media is still in good shape that changing them during long drains for fear of plugging is not a worry...