In Reply to: Re: spin on filter adapter posted by K.LaRue-VA on April 18, 2019 at 21:30:42:
"Some people like to cut open used oil filters to look for possible engine problems. That's a lot harder to do with a spin-on type filter cartridge."
I watch a guy do that on YouTube; he used a dremel type tool to cut open the canister to show the filter material and such. It was quite interesting.