I recently purchased a ZTU and understand that the conventional cartridge-type oil filter is no longer available. I also understand that the "sock-type" filter that is available is not considered by many to be an adequate filter. I am not sure how the new "Adapter" that uses a conventional screw-on oil filter works. Do you just take the oil filter canister off the ZTU and install the adapter onto the base where the canister was mounted and then turn the new oil filter on to the adapter? Does anyone have a photo of the adapter and oil filter installed on a tractor? Thanks for any info you can provide.