Stp oil filters, any good | BobIsTheOilGuy
Thanks, the filter model would be Stp s3512, it's a Kohler ch23 engine. Looking at the AutoZone pic of the s3512 it looks to be a classic construction oil filter, that is not an ecore. So if AZ is reliable the ecore concerns are not a factor. An in person view would confirm this. I would describe STP filters generally to be 'adequate' filters.